Business groups, economists and even some Republicans cautioned that new tariffs on goods from Canada, Mexico and China could undercut U.S. industry and the economy.
Amid warnings of price increases, Canada moved quickly to retaliate, China said it had planned countermeasures, and Mexico said it would soon unveil its response.
More than a third of the goods and services imported to or bought from the United States are linked to Canada, Mexico and China. Tariffs could lead to higher prices for consumers.
The president-elect’s vow to impose 25 percent duties on Canadian imports could ravage Canada’s auto industry and decimate Windsor, a city deeply tied to the U.S.