Canada will announce retaliatory tariffs against the U.S. on Tuesday after relations between U.S. President Donald Trump and Canadian Prime Minister Mark Carney deteriorated.

Negotiations over the United States' newly announced tariffs on Canada have fallen apart, as Canadian Prime Minister Mark Carney says the countries won't "return to our old…

Carney said Saturday that Canada will impose retaliatory tariffs on U.S. goods starting Sept. 8.