brazil and argentina instead of the u.s. the first sign of a serious response to the threat against mexico. the u.s. is the world's largest producer of corn. shipments have soared since nafta was signed. many say auto and agriculture. farmers and american auto companies are the biggest benefits of nafta. >> are you from iowa? >> yes. yes. i've been on a tractor and on a combine. i know a bit about corn. this was our last "early start" together. i'll be back for two more days. you are going on vacation. >> thanks for joining us. i'm christine romans. >> i'm john berman. thank you for everything. "new day" starts now. >> this is cnn breaking news. we want to welcome viewers in the united states and around the world. this is "new day." tuesday, february 14th. 6:00 here in new york.