Canada will impose retaliatory tariffs on United States goods starting September eighth. This action escalates a trade conflict after United States tariffs were imposed. Canada's prime minister stated the retaliation would match tariffs dollar for dollar. Last-ditch negotiations collapsed late Friday, ending talks between the two nations. The trade dispute casts doubt on the future of a North American trade agreement.

Negotiations between the U.S. and Canada broke down late Friday and tariffs went into effect early Saturday morning.

Negotiations between the U.S. and Canada broke down late Friday and tariffs went into effect early Saturday morning.