Trump tried to hurt Canada with tariffs. In Michigan's Senate race, they may hurt him more

<img src='https://i.cbc.ca/ais/6f4bb61a-86da-4d7d-9c7b-dbef089b1901,1793382279344/full/max/0/default.jpg?im=Crop%2Crect%3D%280%2C0%2C1920%2C1080%29%3B' alt='A screencap of a TV commercial in which an older man sits at a bar with a bottle of beer.' width='620' height='349' title='A still from a campaign ad by Michigan Republican Senate candidate Mike Rogers.'/><p></p>