President-elect Donald Trump promised Monday to enact new tariffs on all imported goods from China, Mexico and Canada — America’s three largest trading partners. The incoming president said the moves would come on Inauguration Day through executive order,

If they are imposed, the tariffs will hurt American consumers most of all. The North American supply chain is integrated; nearly $1trn-worth of goods crossed the northern and southern borders of the United States last year.

The president-elect says he would impose tariffs on all imports from Canada and Mexico, which could hurt the auto industry.