mexico. the president insisting he's not bluffing and that the first round of tariffs of 5% on mexican goods will take effect starting monday. trump wants to use the tariffs to pressure mexico into stopping undocumented immigrants from central america from crossing the u.s. border. the senate majority leader, mitch mcconnell, flat out saying today that republicans do not support the move. but the president firing back, saying it would be foolish for republicans to try to block the tariffs. so lots to discuss here. katherine ram bell, alina plot, ana navarro, mike shields will help us along. good evening to all of you. catherine, i'm going to start with you. you call these mind-numbingly idiotic tariffs. okay. why don't you say how you really feel next time. lay it out for me. >> there are a number of reasons why these are really stupid to impose. the first one of dors is that americans are going to be paying