The president-elect said that he would impose the tariff on Day 1 and that it would stay in place until Canada and Mexico halted the flow of drugs and migrants across U.S. borders.The president-elect said that he would impose the tariff on Day 1 and that it would stay in place until Canada and Mexico halted the flow of drugs and migrants across U.S. borders. Protectionism (Trade), International Trade and World Market, United States International Relations, United States Politics and Government, Immigration and Emigration, Trump, Donald J, Canada, Mexico, North America, China, United States Read More