by. everybody has a right to their own opinion. on history, i would want to be here with this bill today. this hour, chris christie ready for another white house run, moving his blistering public feud with former president trump to primary states and debate stages. it comes as ron desantis is barnstorming across iowa, making four more stops today in his push to win over those iowa trump voters. now he is attacking me over some of these disagreements. i think he is doing it in a way that voters will side with me. i will counterpunch, fight back on it. i will focus my fire on biden. he should do the same. coming up, steve kornacki will break it all down. i will be joined by a congressman to talk about a frightening new warning from science and tech experts on the threats to humanity s future presented by artificial intelligence. good day to you. i m peter alexander in for andrea mitchell. she s on assignment. in washington, there s a critical numbers game playing out on