Canada will retaliate with tariffs on US goods starting September 8, escalating the ongoing trade conflict.

Canadian Prime Minister Mark Carney vows to retaliate, says his country recognized that 'America has changed' and that the two countries would 'not return to our old relationship'

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

Canada would match US tariffs "dollar for dollar", says Prime Minister Mark Carney.

Canadian Prime Minister Mark Carney vowed to retaliate \