Canada’s oil industry stressed the economic and security benefits of its exports to the US, while also using President Elect Donald Trump’s threat to impose tariffs on the country’s goods as a chance to criticize Prime Minister Justin Trudeau.

Shares of exchange-traded funds that invest in stocks in Canada, Mexico and China were falling Tuesday, after President-elect Donald Trump announced over social media his plans to quickly impose new tariffs on those countries when he enters the White House.