a developing story in britain this morning. terror in london. police kill an attacker after he goes on a stabbing spree on a busy street. >> run for my life. also tonight, lashing out. president trump takes shots at political rivals and his impeachment in a super bowl sit-down. >> it's been a very, very unfair process. caucus countdown. >> hello, indianola! >> making their final pitches before tomorrow's first in the nation contest. >> now is the time for action. restricted entry. travelers face new obstacles as

officials rush to slow the growing coronavirus. and they came. they saw, they stayed. how these slippery sea lions became a san francisco treat. ♪ >> announcer: this is the "cbs overnight news." >> welcome to the "overnight news." i'm omar villafranca. investigators in london are looking at possible terrorist links to the man who went on a stabbing spree on a busy street. police say the attacker was wearing a fake bomb. he was shot and killed by officers. three people were injured. roxana saberi starts us off tonight from the london suburb of streatham. >> reporter: this video posted on social media showed the moments right after the attacker was shot dead by police. >> go to the back of the store! >> reporter: an armed plainclothes officer orders

onlookers to take shelter in a shop. police say the attacker was under surveillance when he stabbed two people on this busy road and a third was injured by flying glass caused by the gunshots. they say a hoax explosive device was strapped to the suspect's body. they believe the attack was linked to islamic terrorism. >> the young male wearing something they say was a vest, and the police officer with the gun. >> reporter: as forensic officers worked into the evening and a police helicopter flew overhead, local resident annemarie o'leary told us she ran home with her kids when she heard about the attack, but she praised the quick police response. >> i didn't know they could get on the scene so quickly and act as quickly as they did. it's been phenomenal. i actually feel quite reassured and safe. >> reporter: the attacker was not only known to the authorities, he was also reportedly recently released from prison where he served time for terror offenses. that's reminiscent of another attack here in london in october when police shot and killed a convicted terrorist after he stabbed two people to death.

omar? >> roxana, thank you. president trump is hosting a super bowl party at his golf club in palm beach, florida tonight. but wednesday's scheduled people vote and his political rivals are very much on his mind. ben tracy is traveling with the president. >> it's been a very, very unfair process. >> reporter: in a presuper bowl interview with fox news host sean hannity, president trump was asked if he can still work with democrats in congress after impeachment. >> well, i'd like to, but it's pretty hard when you think about it. but they don't care about fairness. they don't care about lying. so i'm not sure they can do it, to be honest. i think they just want to win, and it doesn't matter how they win. >> reporter: while an acquittal of the president this week is all but assured, house manager adam schiff says he will keep trying to convince senators to convict. >> we're still going to go into the senate this week and make the case why this president needs to be removed. it will be up to the senators to make that final judgment, and the senators will be held accountable for it.

>> reporter: the president is looking beyond impeachment. on saturday night, he was the star of a campaign kickoff show at his mar-a-lago club and is now increasingly focused on his 2020 opponents. >> i would love to run against bloomberg. i would love it. >> reporter: but a barrage of anti-trump tv ads funded by billionaire businessman mike bloomberg seems to be getting under the president's skin. >> donald trump is counting on being able to divide america to win the election. >> reporter: in a series of tweets, mr. trump has dubbed bloomberg mini mike, a knock on bloomberg's height. >> now he wants a box for the debates to stand on. it's okay. there is nothing wrong. you can be short. why should he get a box to stand on, stock in he wants a box for the debates. >> reporter: the bloomberg campaign is not shying away from the fight. in fact, it seems to be trying to outtrump trump, a remarkable

tweet, the president is lying. he is a pathological liar who lies about everything, his fake hair, his obesity and his spray-on tan. welcome to campaign 2020. omar? >> ben, thank you. it's down to the wire in iowa. the presidential candidates are making their final pitches today ahead of monday's caucuses. the latest cbs battleground tracker polls shows former vp biden and bernie sanders in a dead heat at 25%. pete buttigieg is a close second followed by senators elizabeth warren and amy klobuchar. nicole killian is in the hawkeye state. >> you have made me a better candidate, and you will make me a better president. thank you. >> reporter: on the eve of the iowa caucus -- >> i do a lot of grassroots politicking. you're not going to see one of my ads in the super bowl. >> reporter: the democratic presidential candidates blitzed the state and the sunday shows in the final stretch. >> and how do you define success in iowa? is it top two? >> i'll leave that to the

pundits, but what i will say is it of course very important for us to do well in iowa. >> reporter: the former south bend mayor is selling himself as the change candidate over his more established and progressive rivals. hoping to run up the score, senator bernie sanders aimed to do what he almost did four years ago, win. >> and we win here, we have a path toward victory, and together we will defeat the most dangerous president in modern american history. thank you all so much. >> reporter: but in his closing arguments, former vice president joe biden maintained he's the best candidate to take on president trump. >> i do have a nickname i want to give him. former president, former president. donald trump. >> reporter: off the stump, voters at this des moines diner considered the options on their plate. >> i've been a supporter of bernie in the past, and i just like elizabeth -- well, the fact that she is a woman.

>> i think i'll probably vote for trump again this year. >> i'm a caucus -- >> reporter: one key is the iowa poll. long considered a gold standard and a predictor of who may win the caucus. but it was abruptly canceled after someone from the buttigieg camp raised concerns how it was conducted. omar? >> thank you. cbs will have coverage throughout the night as results come in. and on tuesday, norah will anchor our primetime coverage of president trump's state of the union address from washington, d.c. starting at 9:00 p.m. eastern, 6:00 p.m. pacific. in east africa today, somali officials declared a national emergency. billions of locusts are swarming across the region, threatening the country's food supply ahead of this spring's harvest season. heavy rains are blamed for the infestation, and they're calling it the worst in 25 years. it was unseasonably warm

today across a big part of the country. in denver, the mercury hit 69 degrees. and in pennsylvania, punxsutawney phil did not see his shadow this morning. so you an expec

♪ >> announcer: this is the "cbs overnight news." >> tough new restrictions take effect today as the united states tries to contain the spreading coronavirus. worldwide confirmed cases now top 16,000, most of them in china. more than 360 people have died. there are now nine confirmed cases in the u.s., including a

woman confirmed today in california. all flights from china are being directed to seven u.s. airports for passenger screening. there is concern officials are not adequately prepared for the task at hand. here is jonathan vigliotti. >> reporter: u.s. citizens returning from china's hubei province will now face mandatory quarantines lasting as long as two weeks. their possible home upon return one of four military facilities around the country, including california's travis air force base where up to a thousand people could be held. non-u.s. citizens who have recently been in areas impacted by the coronavirus will be temporarily suspended from entering the united states. the cdc says it's the first quarantine order by the federal government in over 50 years. the historic crackdown coming as more americans test positive for the virus. national security adviser robert o'brien spoke this morning on "face the nation." >> we're up to almost 15,000 cases of infection in china.

i think 300 deaths. right now there is no reason for americans to panic. this is something that is a low risk we think in the u.s. >> reporter: low risk, but not no risk. a boston man tested positive on saturday. the student in his 20s returned from wuhan, china last tuesday, one day before logan airport began screening for the virus. he is being monitored at his home. >> anyone who came in contact with him, we're working on that situation. when he came back here from wuhan, china, he notified the medical profession right away. >> reporter: the rate of infection is nearly double that of the sars outbreak in 2002. but in what many experts call encouraging, the coronavirus's mortality rate is significantly less. omar? >> jonathan, thank you very much. china is ground zero for the mysterious coronavirus outbreak. it's also where authorities are going to extremes to contain it and help the infected. ramy inocencio is in beijing. >> reporter: nearly 60 million people are still on some kind of

lockdown here, but that has not stopped the virus from traveling. on saturday, the philippines confirmed its first death from the virus and the first actually outside china. that was a 44-year-old man from wuhan. now in wuhan, the government finished construction this weekend of one of those two hospitals to treat people infected with the virus, while a growing list of countries are banning foreign nationals who have travelled to china or to the virus' epicenter in hubei province. that includes the united states, japan, new zealand and the philippines. here in beijing, china's capital and biggest city is still unusually quiet. many people haven't come back from the extended lunar new year holiday. the people here are mostly staying at home. stores are short of masks and hand sanitizer as anxiety grips the city. even american powerhouse companies apple and starbucks have temporarily frozen operations. here in beijing, more than 700 miles to the north of the epicenter, people are mostly

self-quarantining, and the people who are coming out are mostly wearing masks. this shopping center on a weekend would normally be crowded. to minimize the movement of people, cities like huang gong are allowing to leave to buy products. claiming officials tried to quiet the earliest reports of this virus and the british journal released a study saying more than 75,000 people were infected with the virus as of last week. if that is true, that would imply massive underreporting. ramy? >> thank you very much. in east africa today, somali officials declared a national emergency. billions of locusts are swarming across the region, threatening the country's food supply ahead of this spring's harvest season. heavy rains are blamed for the infestation, and they're calling it the worst in 25 years. australian scientists today

demand their government take urgent action on climate change. they're speaking out as wildfires rage south of the capital, canberra, and parliament sits for the first time this year. dozens of homes were destroyed overnight. officials are warning people to remain vigilant. it was unseasonably warm today across a big part of the country. in denver, the mercury hit 69 degrees. and in pennsylvania, punxsutawney phil did not see his shadow this morning. so you can expect an early spring. but it does look like winter as usual in the week ahead. there is still much more as he on tonight's cbs weekend news. how legalized marijuana may be behind more driving accidents than first thought. this super bowl sunday is unlike any other in more than 900 years. we'll explain why. and later, how these smelly barking squatters became a fan favorite in san francisco.

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when you take align, you have the support of a probiotic and the gastroenterologists who developed it. align helps to soothe your occasional digestive upsets 24/7. with a strain of bacteria you can't get anywhere else. you could say align puts the pro in probiotic. so where you go, the pro goes. go with align, the pros in digestive health. and try align gummies with prebiotics and probiotics to help support digestive health. there is a new warning about the skyrocketing number of crashes involving marijuana. a aaa study out this weekend looked at ten years of traffic deaths in washington state. it found the number of fatal accidents involving drivers high on marijuana has more than doubled since pot was legalized

there in 2012. here is kris van cleave. >> reporter: 16-year-old chad briton was walking to his car during lunch when he was hit and killed in front of his high school by a teen driver high on pot. >> he was a beautiful soul. he'd do anything for anyone. >> reporter: new data reveals during the five years before and after washington state gave a green light to recreational marijuana, deadly crashes where a driver tested positive for active thc more than doubled. in 2017, more than one in five were high. aaa's jake nelson worries the rate of driving stoned is reaching a new high as legalized cannabis becomes more widely available. >> you're going to use marijuana, you shouldn't drive. and if you know you to drive, you should not marijuana in any shape or form. >> why do you drive around smoking? you know that's not a good idea, right? >> yeah, yeah i do. >> reporter: dash cameras shows the kind of run-ins with drivers

police say is happening more often. >> very common. we run into it every day. >> reporter: state patrol david meyers says drivers often mix pot with bosnia or other drugs. >> it affects your cognitive abilities, your decision making, it slows down your reaction times. >> reporter: research from 2018 shows crashes overall were up 6% in washington, nevada and oregon compared to neighboring states where marijuana is banned. recreational pot is now legal in 11 states and it's allowed for medical use in 22. in a recent survey of mother than 11,000 colorado driver, 69% of people who identified as cannabis users said they had driven high in the last year, and 10% believe they drove better while stoned, leading to psa's like these. >> the police can't tell that i'm driving high. [ buzzer ] >> reporter: aaa says states need a two-tier system testing for both recent years and evidence of impairment. >> laws that limit how much thc

can be in a person's blood as a driver are completely meaningless in terms of allowing us to predict how impaired somebody is behind the wheel. >> reporter: aaa does oppose the legalization of recreational marijuana saying it is a danger to drivers. they say the increase in stops, that's due to more people testing for the preference of marijuana, and that marijuana can stay detectable in the body for days after it's consumed. kris van cleave, cbs news, los angeles. still ahead, as the staples center in los angeles begins to dismantle the massive memorial to kobe bryant, his wife makes a special request.

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kobe bryant's widow has made a special request of the staples center, bryant's home arena. vanessa bryant wants the thousands of tributes from artwork to letters and even t-shirts saved for the family, and arena officials promise to catalog it for her too. then there is one of the more unique tributes at ball field in pleasant, california. the outfield grass cut to reveal an amazing likeness of the legendary star.

> arrhythmophobics, today is not your day. the day, 02-02-2020 is a palindrome, meaning it's the same read forward and backwards. it's the first in nine years, and it comes on the 33rd day of the year with 333 days left to go. to berlin now and a perfect pair of pandas. meet the twins. their english nicknames pit and paul. the 5-month-old cubs are making their first appearance at the berlin zoo. they're on loan from china, and in a few years they'll return to help preserve the endangered species. but for now they're a lot more concerned about where they're going get their next meal. next, sitting on the dock of the bay, and not doing much more. they're san francisco's fabulous freeloaders.

we close tonight with some beloved but noisy neighbors in san francisco, celebrating 30 years at their seaside home while never paying a penny for rent. here is john blackstone. >> reporter: it was 30 years ago this month that hundreds of smelly, noisy sea lions invaded the boat docks of pier 39 on san francisco's fisherman's wharf. they've been calling this home ever since. >> big guys and little guys and surgically teenagers. >> reporter: and the big guys, they can certainly throw their weight around? >> oh, yes, and they do. >> reporter: sheila chandor had just started her job as harbor master back then. >> if you can imagine 1400 animals on that dock.

it was just a seething mass of sea lion noise. >> reporter: and smell? >> and smell. >> reporter: but in the years since, these blubbery marine mammals have become an unlikely tourist attraction. have you done any estimate of how many tourists over 30 years now have come to see the sea lions? >> it's got to be in the millions. >> reporter: in appreciation for bringing in all those tourists, san francisco is celebrating the sea lions with 30 colorful sculptures going up around town. what's the reaction been to these so far? >> pretty fantastic. i mean, they've hit social media posts almost nonstop. >> reporter: george jacobs says these sea lions have been painted to deliver messages thinking one has messages from all the pollutants and the chemicals that are in the ocean. >> reporter: they're beautiful and they're not noisy and they don't smell. >> correct. >> reporter: and they provide a photo opportunity for sea lion fans who can't get close enough to the real thing. there has also been a cake and a

proclamation by the mayor. >> it will always be remembered as sea lion day in the city and county of san francisco. >> reporter: it's a lot of excitement over an animal that spends much of its time just lying in the sun. >> want some entertainment from them. it's got nothing. >> reporter: but that seemed to be enough for nick and jean abraham from england. why is it interesting to watch these guys? >> we've been different places all over in the world. we've never seen -- whales, kangaroos in australia. so we thought we would take a chance on these. >> reporter: they're free to come and go, but they keep coming back. you do worry that one day they'll find somewhere else to go. >> we do, but we don't speak than. >> reporter: they have gone from a nuisance to a necessity, from an annoyance to an attraction. you could say the sea lions have sealed the deal. john blackstone, cbs news, san francisco. >> and that's the "overnight news" for this monday. for some of you, the news continues. for over, check back with us a little later for the morning

news and cbs this morning. from the broadcast center in new york city, i'm omar villafranca. ♪ is the "cbs overnight news." >> welcome to the "overnight news." i'm omar villafranca. investigators in london are looking at possible terrorist links to the man who went on a stabbing spree on a busy street. police say the attacker was wearing a fake bomb. he was shot and killed by officers. three people were injured. roxana saberi starts us off from the london suburb of streatham. >> reporter: this video posted on social media showed the moments right after the attacker was shot dead by police. >> shut the door, shut the doors! go to the back of the store. >> reporter: an armed plainclothes officer orders

onlookers to take shelter in a shop. police say the attacker was under surveillance when he stabbed two people on this busy road and a third was injured by flying glass caused by the gunshots. they say a hoax explosive device was strapped to the suspect's body. they believe the attack was linked to islamic terrorism. >> the young male wearing something they say was a vest, and the police officer with the gun. >> reporter: as forensic officers worked into the evening and a police helicopter flew overhead, local resident annemarie o'leary told us she ran home with her kids when she heard about the attack, but she praised the quick police response. >> i didn't know they could get on the scene so quickly and act as quickly as they did. it's been phenomenal. i actually feel quite reassured and safe. >> reporter: the attacker was not only known to the authorities, he was also reportedly recently released from prison where he served time for terror offenses. that's reminiscent of another attack here in london in october when police shot and killed a convicted terrorist after he

stabbed two people to death. omar? >> roxana, thank you. president trump is hosting a super bowl party at his golf club in palm beach, florida tonight. but wednesday's scheduled people impeachment vote and his political rivals are very much on his mind. ben tracy is traveling with the president. >> it's been a very, very unfair process. >> reporter: in a presuper bowl interview with fox news host sean hannity, president trump was asked if he can still work with democrats in congress after impeachment. >> well, i'd like to, but it's pretty hard when you think about it. but they don't care about fairness. they don't care about lying. so i'm not sure they can do it, to be honest. i think they just want to win, and it doesn't matter how they win. >> reporter: while an acquittal of the president this week is all but assured, house manager adam schiff says he will keep trying to convince senators to convict. >> we're still going to go into the senate this week and make the case why this president needs to be removed. it will be up to the senators to make that final judgment, and the senators will be held accountable for it.

>> reporter: the president is looking beyond impeachment. on saturday night, he was the star of a campaign kickoff show at his mar-a-lago club and is now increasingly focused on his 2020 opponents. >> i would love to run against bloomberg. i would love it. >> reporter: but a barrage of anti-trump tv ads funded by billionaire businessman mike bloomberg seems to be getting under the president's skin. >> donald trump is counting on being able to divide america to win the election. >> reporter: in a series of tweets, mr. trump has dubbed bloomberg mini mike, a knock on bloomberg's height. >> now he wants a box for the debates to stand on. okay. it's okay. there is nothing wrong. you can be short. why should he get a box to stand on, okay? he wants a box for the debates. >> reporter: the bloomberg campaign is not shying away from the fight. in fact, it seems to be trying

to outtrump trump. in a rather remarkable state this afternoon, the president is lying. he is a pathological liar who lies about everything, his fake hair, his obesity and his spray-on tan. welcome to campaign 2020. omar? >> ben, thank you. it's down to the wire in iowa. the presidential candidates are making their final pitches today ahead of monday's caucuses. the latest cbs battleground tracker poll shows former vp biden and bernie sanders in a dead heat at 25%. pete buttigieg is a close second followed by senators elizabeth warren and amy klobuchar. nikole killion is in the hawkeye state. >> you have made me a better candidate, and you will make me a better president. thank you. >> reporter: on the eve of the iowa caucus -- >> i do a lot of grassroots politicking. you're not going to see one of my ads in the super bowl. >> reporter: the democratic presidential candidates blitzed the state and the sunday shows in the final stretch. >> and how do you define success in iowa? is it top two? >> i'll leave that to the pundits, but what i will say is

it of course very important for us to do well in iowa. >> reporter: the former south bend mayor is selling himself as the change candidate over his more established and progressive rivals. hoping to run up the score, senator bernie sanders aimed to do what he almost did four years ago, win. >> and we win here, we have a path toward victory, and together we will defeat the most dangerous president in modern american history. thank you all so much. >> reporter: but in his closing arguments, former vice president joe biden maintained he's the best candidate to take on president trump. >> i do have a nickname i want to give him. former president, former president donald trump. >> reporter: off the stump, voters at this des moines diner considered the options on their plate. >> i've been a supporter of bernie in the past, and i just like elizabeth -- well, the fact that she is a woman.

>> i think i'll probably vote for trump again this year. >> i'm a caucus -- >> reporter: one key barometer which way voters are leaning is the iowa poll. it has long been considered a gold standard and a predictor of who hey win the caucus, but it was abruptly canceled after someone from the buttigieg camp raised concerns about how it was conducted. omar? >> nikole, thank you. cbs will have coverage throughout the night as results come in. and on tuesday, norah will anchor our primetime coverage of president trump's state of the union address from washington, d.c. starting at 9:00 p.m. eastern, 6:00 p.m. pacific. tough new restrictions take effect today as the united states tries to contain the spreading coronavirus. worldwide cases now top 14,000, most of them in china. more than 300 people have died. there are now nine confirmed cases in the u.s., including a

woman confirmed today in california. all flights from china are being directed to seven u.s. airports for passenger screening, and there is concern officials are not adequately prepared for the task at hand. here is jonathan vigliotti. >> reporter: u.s. citizens returning from china's hubei province will now face mandatory quarantines lasting as long as two weeks. their possible home upon return one of four military facilities around the country, including california's travis air force base where up to a thousand people could be held. non-u.s. citizens who have recently been in areas impacted by the coronavirus will be temporarily suspended from entering the united states. the cdc says it's the first quarantine order by the federal government in over 50 years. the historic crackdown coming as more americans test positive for the virus. a boston man tested positive on saturday. the student, in his 20s returned from wuhan, china last tuesday,

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♪ >> announcer: this is the "cbs overnight news." >> welcome back to the "overnight news." i'm omar villafranca. the 2020 presidential election officially kicks off today in iowa where democratic voters gather for their nominating caucuses. a new cbs news poll out this morning says 75% of americans think the u.s. economy is in good shape. that's the highest number in nearly 20 years. so just what are the democrats looking for in a presidential candidate? it's a question that nick thompson, editor-in-chief of wired magazine, has been asking. >> if you are the democratic nominee, will you defeat donald

trump? >> yes, i will. >> and i'll tell you exactly how. i see this as a unique moment in american history. >> i think our democracy is literally at stake here. >> we lost an election in 2016, and it was a heartbreaker, but we didn't lose hope. >> most americans are with us on the issues, and yet we've often struggled to win. >> reporter: the town halls are wrapping up. >> hi, everybody. how are you? >> reporter: and as iowa democrats head to the caucuses tomorrow, polls show a majority of democrats have one thing on their minds, defeating president trump in november. even more important than agreement on the issues -- >> we have an opportunity to send a message. >> reporter: but just how to defeat trump is threatening to divide the party thinking president absolutely could win again if we don't have the right approach to challenge him and defeat him. >> reporter: the leading candidates have roughly split into two camps. and iowa democratic voters are split too between whether they want a candidate who promises

fundamental change. >> i like more progressive thinking, and i really am torn on their approaches to health care. >> reporter: or one who will just bring politics back to normal. >> we really need to be able to balance everything in this country for everyone. >> we can cancel all student debt in america. >> reporter: progressive bernie sanders is slightly leading in iowa. according to the latest cbs news poll, with fellow progressive elizabeth warren in fourth place. for the moderate, former vice president and former mayor pete buttigieg are clustered behind sanders with senator amy klobuchar in fifth place. no other candidate gets more than 1%. >> this election matters not for the next four years or the nexting ayears, but for generations to come. and what that does is it creates opportunity to lay out a different vision. >> i think eight years of donald trump will fundamentally change who we are as a country, how we're viewed. >> so what i always tell groups of democrats in whatever state

i'm in, we better not screw this up. >> reporter: so how do you think the democrats are most likely to screw this up? >> first of all, if we put a candidate who's views are so contrary to a lot of people in our country. >> reporter: the fundamental question for the democratic party, if the nominee is a moderate, will progressive voters get on board or sit the election out? or vice versa, if it's a progressive nominee will, moderates stay home? >> all the candidates are trying to appeal to the sense that the country wants to be united. but united for what? only to defeat donald trump or united for a vision. >> reporter:? waleed shaheed is a president of a group that helped progressive alexandria ocasio-cortez to congress. >> it's all about motivation. and we've been told time and time again that the electable candidate is the one who can win, and the electable candidate, whether it's al gore or john kerry or hillary clinton, lose. >> reporter: that's the argument

elizabeth warren and bernie sanders have been making. >> i believe that health care is a human right, not a privilege. >> reporter: filled with details about medicare for all and increased taxes on the wealthy and corporations. >> it's time for a wealth tax. >> there are a lot of democrats who say i just need the next president to calm things down, make life normal again. what do you say to them? >> i think that we have to ask what was broken in this country that got donald trump elected to begin with. and anyone who is saying in this presidential primary all we need is business as usual, we just need an america that was like it was before donald trump got elected is not -- not going to be able to win this election and not going to be able to heal the problems in this country. >> real change, which is what this campaign is about. if you want modest change, if you want to tinker around the edges, there are other candidates you can vote for.

>> reporter: but consider when it comes to winning over swing voters who could vote either democrat or republican, iowa democrats put all the moderates' chances at above 50% while the progressives are below 50%. >> the song that i would encourage everyone in politics to remember is a rolling stones song. you can't always get what you want. >> reporter: ed rendell is a former governor of pennsylvania and former mayor of delaware. he has endorsed joe biden. >> you can't always get what you want. if you try sometimes, you might just get what you need. we don't need the most progressive democrat to be president. we need someone who is progressive compared to the crew that's in there now. >> reporter: so a funny thing happened as we asked the so-called moderates about their opponents. they all wanted to claim the progressive label. >> i'm trying to make sure everybody can get health care. >> reporter: like pete buttigieg with his medicare for all who want it plan, which leaves private health insurance in place. >> in a debate the other night

here in iowa, you said the boldness of a plan should not be measured by the number of people it alienates. what did you mean there? >> for example, if somebody characterizes my health care plan as small, i've got remind them that this would be the biggest thing we've done to american health care in a half century. so when somebody says it's not bold, it makes me wonder are you defining boldness by something other than the impact it's going to have in our lives? not how much controversy can it generate online. >> i think maybe you should build a bridge instead of blowing one up. >> reporter: amy klobuchar is selling herself as a pragmatist. >> a lot of pundits break the race down as saying they're progressives and they're moderates. do you feel that's a fair way of putting it? >> no, i don't. i do not. because i think if you're a progressive, you have to make progress. and i am the one that, again, that brings the receipt versus some of my opponents up there on the stage. i'm the one that's passed over

100 bills. >> we need a president that can bring us together. >> day one. >> on day one. >> amen. >> thank you, sir. >> reporter: joe biden is rung hard on electability. but do you think that some of the other candidates who have taken more progressive stands, stands that may not be as appealing to liberal progressives and independents will be able to win in november? >> look, one of the things i reject the notion they're the most progressive plans. i promise you, if my position on climate change, on health care, on immigration, on education in fact were to come to fruition, your son is going to be writing about that biden administration being one of the most progressive administrations in american history. look, i think the first thing we have to do to win, and i'm not being a wiseguy when i say this, you've got to be authentic. you've got to tell people the truth. and the idea that a couple of candidates well, i'm not going to say how much medicare is going to cost because it's too complicated.

say that again? >> maybe, just maybe after 100 years of talk about the need for health care for all, maybe it's time to stand up to the health care industry and actually accomplish it. >> reporter: here is how activists waleed shaheed cease it. >> i think one of the biggest achievements of the progressive movement is whoever the nominee is will be the most progressive candidate ever nominated since perhaps lbj or fdr in terms of level records of government. >> we have an opportunity to broaden this coalition to get as many people as possible in this effort. you don't have to be a die-hard democrat to see what's wrong with the trump presidency. >> i've always been label ad lib ral democrat. i refuse to label that the proposals i have are not significantly progressive compared to where we. >> reporter: i thought you were

labeled progressive center if i remember eighth grade. >> notice they ran against me as biden is a flaming liberal. >> reporter: are you a flaming liberal? >> no. i think i'm a traditional democratic liberal. >> i think that i dream big, and i think part of dreaming is big is actually getting things done. and i think that's where the citizens are right now. >> i believe that the way we're going to win is to shake the table. it's to look at this differently, and it's to be absolutely clear about who we're fighting for and what we're fighting for. >> reporter: at the end of the day, ed rendell says it all comes down to one thing. >> how much does a wildly enthusiastic vote for president count? one vote. how much does a $9.95 at my age? $9.95? no way. $9.95? that's impossible. hi, i'm jonathan, a manager here at colonial penn life insurance company,

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unstopables in-wash scent booster ♪ ♪ downy unstopables as democrats in iowa gather for their caucus, one economic issue looms large, child care. according to a recent study in iowa, 76% of children under 6 have all available parents working outside of the home. nikole killion has the story from des moines, iowa. >> we all know that child care can be expensive. and here in iowa, the average cost is about $10,000 a year. but for single parents with multiple children, some of them are finding they're spending

significantly more, up to 70% or more on their child care. 4-year-old dominic miranda is all smiles at playtime and pickup time. >> you're going to say hi to baby brother? >> hi. >> give him a kiss. aww! >> reporter: his mom zoe is finishing maternity leave, and when she returns to her custodial job, she'll have to pay not just for one day care bill, but two. >> there are sometimes that i feel like i have to rob peter to pay paul. it is really, really hard when it comes to paying rent, paying utilities, paying myself and paying a car. >> reporter: stephanie jule is also a single mom. she gets assistance from the state, but fears losing it again. >> i had gotten a $1 raise at work. but with that dollar raise, i ended up not qualifying for child care assistance at all, and the bill went up to $1500 a month. and just -- that was more than my mortgage payment. >> reporter: united way's dee

anne cook says it illustrates illinois's child care. it's estimated a family of three would have to make less than $31,000 to qualify. >> iowa's program has one of the very lowest entry points. so people who really don't have enough to make ends meet are still not able to get on child care assistance. >> reporter: the issue has galvanized iowa's legislature and the presidential candidates. >> it makes no sense for child care to cost two-thirds of somebody's income. >> we can cover child care for all of our children. >> reporter: in the city of pella, this manufacturing plant took an innovative approach, organizing an onsite child care facility that offers workers a reduced rate. kate guess has a 4-year-old in the program and manages the company's hr. do you see this as the wave of the future here in iowa? >> i hope so. i think that there is a lot of creative ways to address the

child care gaps that we have here in the state and we have across the country. >> reporter: gaps that zoe hopes will eventually c se

a mass migration is under way in california. millions of water foul are on their yearly trip from the arctic to south america, and a lot of them are stopping off along the 4,000-mile pacific flyway. john blackstone paid a visit. >> reporter: this is what a successful conservation effort looks like. 10,000 snow geese taking a winter break in california's central valley. the central valley is part of what's known as the pacific flyway, used by 10 to 12 million migrating birds each year. more than half of them stop in the central valley, including ducks and geese from the arctic, 4,000 miles to the north. some 350 different kinds of birds on their way to mexico and

south america use the pacific flyway, and they are followed by thousands who flock to see them and attend festivals where bird care and bird behavior are all the rage. >> there are days when i go home and i'm far away from the ducks and geese and that's all i hear ringing in my ears is the sound of the geese. >> reporter: craig isola, director of the national wildlife religion in the heart of the pacific flyway has been helping people sort out bun bird from another for 23 years. >> right now out here we're seeing thousands of northern pintail, american wigeon and i've been hearing snow geese flying all day and some cranes flying. >> reporter: as spectacular as the birds are now, they were not always that way. by 1970, agriculture had taken over 95% of the pacific flyway's wetlands, polluting the fields and filling in wetlands. >> there was a competition between not just wildlife and

agriculture but also human development in general. in the early '80s we saw big reductions in water foul populations. >> reporter: an act of congress and an agreement with mexico and canada in 1986 turned the tide, and so didice farmers like kurt richter who agreed to flood their fields when water foul migrate. >> access to winter water is not that difficult as long as we're not in a drought period. so we have the opportunity to pump water off of the river and shoot it out on to this ground and create what you see behind me here. >> reporter: all together, rice farmers in the central valley flood about 250,000 acres each winter to provide wetlands for birds using the pacific flyway. by the time growing season starts again, the birds will be gone and the farmers will get their land back, knowing they've given nature a little boost. john blae, san francisco. >> and that's the "overnight news" for this monday. for some of you, the news continues. for others, check back with us a little later for the morning

news and "cbs this morning." from the broadcast center in new york city, i'm omar villafranca. it's monday, february 3rd, 2020. this is the "cbs morning news". chiefs are super bowl champions here in miami. >> kansas city come back. the chiefs beat the san francisco 49ers in the super bowl stunner. we'll show you the celebrations plus a look at the halftime show that had america abuzz. all eyes are on iowa as democrats gear up for today's caucuses. last minute pushes from candidates as polls show the front-runners in a dead heat. coronavirus travel ban. how the u.s. is stepping up its efforts to stop the virus from spreading. efforts to stop the virus from