Trump at first imposed 25% tariffs on Canadian and Mexican exports to the U.S., then exempted the duties on Mexican- and Canadian-made vehicles being transported into the U.S. and later by week’s end delayed the tariffs on almost all items for four weeks until April 2.

U.S. President Donald Trump will not let up pressure on tariffson Mexico, Canada and China related to their handling of fentanyl, Commerce Secretary Howard Lutnick said on Sunday, despite recent holds put on announced tariff measures.

Trump and his aides have reportedly threatened to redraw the northern border, go after Canada’s minerals and water, and cancel NORAD.