Transportation Secretary Sean Duffy fired back at Canada on live television Sunday morning after Canadian Prime Minister Mark Carney announced “dollar-for-dollar” retaliatory tariffs in response to the new 50% U.S. tariffs.

Speaking on Fox News Sunday, Duffy said it was “foolish” for Canada to start a trade war with the United States, in part, because America’s northern neighbor “doesn’t have a military.” Canada does have a military, though it is much smaller than the U.S. military.