cbs' cristian benavides has the latest. >> reporter: good evening. a state of emergency that was supposed to last three days has been extend until at least the end of the month as powerful gangs try to overtake haiti's government. a woman shot in the leg by a stray bullet begging for help in port-au-prince. it's part of the ongoing chaos as government forces engage in bloody street battles with gangs. "they came with big guns," this haitian says. "we can't defend ourselves." last week, gangs orchestrated a mass prison break, the new ranks coordinating takeovers of hospitals and seaports. international flights canceled after they tried to take airport. the u.s. estimates they forced 15,000 people from their homes. "miami herald" reporter jacqueline charles broke the story of the u.s. evacuating nonessential embassy staff and fortifying its compound in port-au-prince with marines. >> the u.s. became is actually located in a crossroads of about three powerful gangs. i mean, the country is near collapse. >> reporter: gangs have filled a power void left b

cbs's cristian benavides reports tonight from haiti's border with the dominican republic, which is shut down to fleeing haitians. >> reporter: this was the desperation playing out at the border today. this woman collapsed as she was being taken off this overcrowded immigration truck. she was among a group of haitian citizens who were being deported back to haiti. we rode along with haitian american dana josephs, who helped rush her to a hospital. >> reporter: just hours after the embattled prime minister ariel henry announced he was stepping down, the streets of port-au-prince appeared calm today. henry, who has been stuck in puerto rico, lost support after secretary antony blinken met with caribbean leaders in an emergency meeting monday. they announced they will help form a special council to pick haiti's new leader. for months the country has been rocked by gang violence. their leader, jimmy barbecue jar zeer says the country will remain in chaos if the people are left out of the process. "we haitians have to decide who is going to lead the country," he says, "and what model of gover

norah. >> norah: cristian benavides, thank you. now just a breaking news. court justice samuel alito has extended the temporary pause on a sweeping texas immigration law from taking effect. this law would empower local authorities to arrest suspected migrants from unlawfully crossing the border. the department of justice calls it unconstitutional. cbs's omar villafranca reports on the challenges facing border police departments. >> reporter: this is a daily occurrence. >> yeah. >> reporter: if the supreme court ever allows it to go through, texas governor greg app it will get his way and webb county sheriff mark cuellar and other local law-enforcement will torn federal agents in securing the texas act signal border. >> do you feel law-enforcement was consulted enough when islam is being being made in austin? >> i don't think so. report like the law would allow texas sheriff and police department to arrest, jail, and prosecute migrants of illegally entering the u.s., meaning they didn't come in and of official port of entry. state judges could also order mig

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>> norah: cristian benavides, thank you. police chief of uvalde, texas, announced his resignation today. chief daniel rodriguez was on vacation nearly two years ago when 19 children and two teachers were killed in a mass shooting. his resignation comes less than a week after a report ordered by the city defended the police response to the shooting, when hundreds of officers from multiple agencies waited 77 minutes to confront the gunman. several officers have resigned or been terminated, but none have faced criminal charges. now to the surprising turn in a notorious murder case that gripped the nation. nearly 20 years after being convicted of killing his wife and their unborn child, scott peterson was back in court today seeking a new trial. cbs's jonathan vigliotti reports why peterson's new legal team believes he may be innocent. >> can you both see and hear the proceedings, sir? >> yes, your honor, i can. thank you. >> reporter: scott peterson appeared with his hair pulled back in a ponytail. the 51-year-old, convicted of

>> norah: cristian benavides, thank you for being there.ack here at home, the 2024 general election is officially underway with both president biden and donald trump securing enough delegates to get their party's nomination. today, the presidnt hit the campaign trail in the battleground state of wisconsin, which he won by only 20,000 votes four years ago. and tonight's "listening to america," cbs's nancy cordeshe r state to hear what's on their minds. >> reporter: jay whisenten co-owns a barbershop on milwaukee's north side, just a few blocks from where president biden spoke today. jay voted for biden in 2020, but is now undecided. >> i've been seeing it from both perspectives, and i've been seeing it from the black voters, as well, like, yeah, we going to vote for trump this year, we need big t back in office. >> reporter: we set on him at the rise and grind coffee shop which is owned by bobbi tatum, a lifelong democrat. >> i'm a biden fan. i feel like he is -- unemployment is, you know, down. i feel like he is helping small businesses. i'

. >> cristian benavides, thank you so much. >>> tonight a number of new developments in what's being called the biggest cybersecurity attack on america's health care system. the department of health and human services is now investigating united health group after hackers shut down the company's payment processing arm. three weeks later, the pharmacy network is now back online, but many providers are still struggling. cbs's nicole sganga reports. >> reporter: a ransomware attack turned national crisis. >> it's been one of the most stressful things we've gone through as a practice, and that's saying something given that we survived covid. >> reporter: and for doctors like christine meyer, a personal nightmare. >> on an average weekday, you would get -- >> 20, 30, 40, $50,000 in deposits. >> and today you got? >> 77. >> reporter: the hack targeted change health care, a unit of united health, forcing the nation's largest medical payment system offline on february 21st, leaving hospitals and medical practices in a cash crunch. >> so to find ourselves suddenly looking at our home and its

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cbs's cristian benavides reports on americans still trapped in the chaos. >> reporter: fire trucks in-prince raced to haiti's largest prison set on fire after a mass prison break two weeks ago, a 4,000 prisoners was orchestrated by gangs that sparked violence and chaos. it's been three days since prime minister ariel henry resigned, leading a power vacuum where gangs now control 80% of the capital city. it's believed there are several hundred americans still in haiti. >> we have architected to plan b >> reporter: general laura richardson, the head of u.s. southern command, said they are ready to evacuate americans. dennis hankins was confirmed today as u.s. ambassador to haiti. the post has been vacant since october 2021. here at the border it with the republic, tensions remain high and deportations continued with thousands of other haitians were allowed to cross less than 100 yards to buy badly needed goods at this open market for the first time in days. rosayli peralta runs a shop h here. >> [indistinct] >> reporter: so you've noticed less sales on your gotten less sales since the c

cristian benavides has more on the campaign. >> reporter: air drops of supplies in gaza, israel-hamas war remains a top campaign issue. former president donald trump at a rally in georgia on saturday. >> the attack on israel wouldn't happen. >> reporter: biden held a duly reallity in saturday, what is shaping up to be one of the longest campaigns that will continue to mount for biden. >> year after year we have provided billions of dollars for military aid. you can't say stop the slaughter. he said something needs to change. >> we are looking at the possibility of children starving to death. the united states of america cannot be complicit in this mass slaughter of children. >> reporter: biden has been more critical of israel's assault on gaza in recent weeks including in his state of the union address thursday. >> it also has a fundamental responsibility though to protect innocent civilians in gaza. >> reporter: in minnesota 19% of democrats voted uncommitted to send a message to the biden administration over the washington. georgia had old their primary caucuses on tuesday. >>> prot

as cristian benavides reports, u.s.icials are rejecting suggestions by vladimir putin that ukraine may have had some involvement. >> reporter: a mountain of flowers outside moscow. was the seen of carnage. new video posted on social media showing the moments gunfire rang out as thousands gathered for a rock concert. an affiliate of the islamic state known as isis kate has claimed responsibility for the attack, which claimed the life of over 130 people. a counterterrorism expert and cbs news contributor. >> the intelligence community has been warning for years that isis, despite territorial leadership losses has retained its ability to conduct operation. >> reporter: they released images claiming to show the beginning of the attack. four suspected attackers have been arrested, among 11 people detained. vladimir putin claim they were fleeing to ukraine. >> vladimir putin is trying to link this to ukraine and say that ukraine is responsible. does the u.s. have any evidence to back that up? >> no. there is none whatsoever,

. >> to make you feel better, cristian benavides has the story that shows the odds are not in anybody's favor. >> reporter: the monday after selection sunday means one thing for millions of college basketball fans. time to fill out their ncaa tournament brackets. and that includes university of miami student luca. >> it's march madness, college basketball. always happens. >> reporter: few people know march madness better. >> if there was an easy way, we will all do it. >> reporter: still there are tips for fans staring at a blank bracket. he favors teams with good records on the road and those with big stars. >> usually the tournament champion in most if not all of the final four is going to have a guy that is a first round nba pick. >> odds are that regardless of your bracket ology, it's unlikely you will get it right. >> reporter: there are basically nine quintillion possible brackets. >> reporter: that's a nine followed by 18 zeros. >> that number is comparable to the number of grains of sand on all the beaches in the world. >> reporter: that won't deter about 50 million people from

. >> cristian benavides reports that economic losses are now in the billions. >> reporter: the deadly bridge collapse in baltimore this week which took the lives of six construction workers has also shut down the country's ninth largest port. today marks the beginning of the wreckage removal process. >> even after that initial lift takes place, there still needs to be an understanding of what forms of adjustments have happened, how has lifting that one piece since beginning the removal process, how does that impact the remainder of the bridge that still sits. >> reporter: meaning we do not know when the port can re-open. a large part of the wreckage will need to be cleared for the channel leading to the port to allow ships to pass. directly the port supports over 15,000 jobs. >> and so, we still do not yet have a timeline as to when we can actually begin lifting pieces off of the dali, but we know that today is a remarkably important moment but one that still is going to take further evaluation as to what type of impact that's going to have on the remainder of the mission. >> reporter

as cristian benavides reports, it's happening as the u.s. is conducting air drops of humanitarian aid into gaza. >> reporter: on saturday a senior u.s. official said israel had essentially agreed to a framework of a deal which would see some israeli hostages held by hamas freed in exchange for a six-week pause to the fighting. it's something the biden administration has been pushing for >> i'm hoping so, we're still working real hard at it. >> reporter: it comes as new images show some of the first air drops of humanitarian assistance into gaza by the u.s. 66 bundles of food and water, meant to provide 38,000 meals, a small bed for residents in the territory where half a million people are facing acute starvation, according to the u.n. . >> the truth is, aid flowing to gaza is nowhere nearly enough now, it's nowhere nearly enough innocent lives are on the line and children's lives are on the line. >> reporter: the u.s. has joined jordan, the country already air dropped supplies to the territory. air drops could come with more risk than resul