Trump says he will add additional tariffs on Canada aluminum, steel

President Donald Trump announced Tuesday that he would add additional tariffs on Canada, amid recently imposed trade tariffs on Canada, China and Mexico that resulted Monday in the U.S. stock market having its worst day this year.

Trump said that the tariffs would be on all steel and aluminum coming into the U.S. from Canada.

"Based on Ontario, Canada, placing a 25% Tariff on “Electricity” coming into the United States, I have instructed my Secretary of Commerce to add an ADDITIONAL 25% Tariff, to 50%, on all STEEL and ALUMINUM COMING INTO THE UNITED STATES FROM CANADA, ONE OF THE HIGHEST TARIFFING NATIONS ANYWHERE IN THE WORLD," he wrote in a lengthy TRUTH Social post.

He said the tariffs will go into effect Wednesday morning.