A high stakes trade conflict unfolds as u S President donald trump enforces new tariffs on imports from mexico and canada a move that has drawn strong reactions from both nations Mexican president claudia sheinbaum has criticized the tariffs warning of economic repercussions for regional trade while canadian prime minister justin trudeau has expressed deep concerns about the impact on canadian industries The tariffs mark a major shift in north american trade relations raising uncertainty over the future of agreements like usmca united states mexico canada agreement