Canadian Prime Minister Justin Trudeau said Friday that U.S. President-elect Donald Trump is serious about a threat to impose stiff import tariffs on Canadian imports and warned they would hurt both economies.

Justin Trudeau had dinner with Donald Trump at Mar-a-Lago on Friday evening, after the president-elect threatened steep tariffs on Canada, CNN reported. The Canadian prime minister’s visit, the first by a G7 leader since Trump’s victory, came after Trudeau described how he intends to work with Trump when he’s president once again.

The sudden visit to Florida by the leader of Canada comes days after Trump threatened to impose a 25 percent tariff on Canadian and Mexican goods.