OTTAWA, Aug 23 — Canadian Prime Minister Mark Carney announced retaliatory tariffs on the US yesterday, after walking away from a “bad deal” on trade in a deepening rift...

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

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'