>> nikole killion, thank you. >>> to canada now and a changing of the guard.onight the ruling liberal party elected mark carney as its new leader and the country's prime minister. carney is a political outsider. he has never held political office before. cbs news senior white house correspondent ed o'keefe is in ottawa tonight tracking it all. a lot of excitement in that room, ed. >> reporter: that's right, jericka. you know, president trump's threats of on-again, off-again tariffs have shaken stock markets around the world, and now they're rattling the race to lead canada. late last week he threatened punishing new tariffs on canadian dairy and lumber. >> canada has been ripping us off for years on tariffs for lumber and for dairy products. >> reporter: but today president trump's commerce secretary said those tariffs aren't happening yet. >> you know the president's going to respond to it, but he's agreed not to respond until april 2nd. >> reporter: the back and forth is infuriating canadians. >> uncertainty cannot become the new certainty. >> reporter: fran

>> i don't know. >> reporter: nikole killion, cbs news. >>> powerful storms killed at least two people in mississippi and caused heavy damage in several states. tornadoes ripped the roofs off buildings, uprooted trees, and toppled power lines in aida, oklahoma. the national weather service says the tornado was on the ground for almost four miles. powerful winds overturned tractor-trailers and damaged schools, apartment buildings, and businesses in texas. and mardi gras parades were moved up and shortened before high winds moved in. >>> today nearly 40 million people from pennsylvania to florida are under a threat of severe weather. thunderstorms could become severe as they move into the carolinas this morning. the highest chance of severe storms will be in the eastern half of the carolinas and southern virginia midday and through the afternoon. the threat of damaging winds. the stormy weather is expected to move off the east coast this evening. >>> the cdc says it's on the ground in texas responding to the growing measles outbreak. texas health officials are reporting nearly 160 cases

cbs's nikole killion is following all the developments from west palm beach. >> reporter: in a lengthynterview with fox news's maria bartiromo president trump stopped short of saying whether the u.s. economy could fall into a recession later this year. >> i hate to predict things like that. there is a period of transition because what we're doing is very big. >> i would never bet on recession. no chance. >> reporter: even as his commerce secretary sought to downplay the risk, the president also didn't rule out the possibility of inflation. >> but you may get it again with these tariffs, right? one said to me my input costs have already started to go up, i'm going to have to raise prices. >> in the meantime guess what? interest rates are down. >> reporter: the president stood firm on his tariff strategy after a week of whiplash on wall street. vowing to move ahead with reciprocal tariffs against mexico and canada on april 2nd. >> the of tariffs could go up as time goes by, and they may go up, and i don't know if it's predictability. i think -- >> so that's not clarity. >> no, i think th

nikole killion reports from larnad, kansas. >> reporter: john dryden's family has farmed in western kansase than a century. he grows wheat, corn, soybeans, and sorghum, or milo. >> we may switch to more corn, dryland acres, just knowing there is usually always a market for corn. >> reporter: so you may grow corn instead of milo. >> yes. more corn than milo. >> reporter: since the food for peace program has been suspended, ther eis virtually no market for milo, according to kim barnes. >> this is the milo you are talking about. >> they make flower out of it. it goes into pet food. ethanol. you eat it. >> reporter: he is with a county co-op that purchases green for farmers including dryden. now instead of selling it, he is storing it. >> when you are sitting here on 1.7 million milo, you would like to kind of see it move onto the next step, especially when we have people in the world that are hungry. >> reporter: so while this program is paused, what are you doing? >> well, right now i am turning over every rock i can find. >> reporter: until he finds buyers, he's worried the co-op and the c

cbs news correspondent, nikole killion, reports from west palm beach, florida. >> reporter: a potentialent shutdown is looming this friday. vote on the republican backed measure unveiled it weekend will take place on tuesday. but it remains to be seen whether gop lawmakers could pass them along party lines or have to rely on democratic votes. >> will and they comply with the 72-hour rule before the votes. we're still digging through it with some good in there and we've got to make a decision. in the case of the cr, there's been offers to negotiate. >> reporter: president trump spoke about his new tariffs on mexico, canada, and china. asked in a television interview why he paused some tariffs until next month. >> this is short term and for the good of the car makers and what -- that's mexico, and canada. so i gave them a little bit of a break for the short period of time. >> reporter: and while in washington, authorities are investigating after an armed man believed to be traveling from indiana was shot and injured by u.s. secret service agents near the white house. >> as officers approa