US President Donald Trump late on Monday threatened to block Canadian aircraft maker Bombardier from selling planes in the United States unless it manufactures them domestically, escalating a trade dispute with Ottawa as Canada's retaliatory tariffs on billions of dollars in US products take effect on Tuesday.

"NO MORE SELLING ⁠BOMBARDIER ⁠IN THE UNITED STATES! Their products aren't good enough!" Trump said in a post on Truth Social.

"If they want our Market, they must build here, and stop treating America like a 'piggybank',” he said.

He did not specify how a ban would be enforced.

Trump's post came amid an escalating trade dispute between Washington and Ottawa [FILE: August 23, 2026]Image: Daniel Torok/B66/Avalon/Photoshot/picture alliance