U.S. President Donald Trump suggested that he could still hit Canada with tariffs as early as next month.

Speaking to reporters on his return to the Oval Office Monday, Trump recited concerns about the Canadian and Mexican borders while reiterating his threat to hit both countries with a sweeping 25 per cent tariff.

“We’re thinking in terms of 25 per cent [tariffs] on Mexico and Canada because they’re allowing vast numbers of people … and fentanyl to come in,” Trump said.

“I think we’ll do it Feb. 1,” the president said in response to a question about when those tariffs could be implemented.

Trump, who was sworn in as president around noon on Monday, has been signalling since November that he would introduce tariffs on Canada and Mexico. Trump initially promised to do so on his first day in office, but a number of U.S. media outlets began reporting early on Monday that the tariffs wouldn’t be a day one issue for the new president.