WATCH LIVE: Mark Carney announces retaliation to US tariffs

Canadian Prime Minister Mark Carney is announcing retaliatory tariffs against the United States on Tuesday. This action follows the breakdown of negotiations with the Trump administration, which led to 50% tariffs on $20 billion in Canadian goods starting Saturday. Relations between the two nations deteriorated sharply on Monday after President Donald Trump demanded that Canadian leaders fall in line or face consequences. Carney will outline the specific retaliation measures during a scheduled announcement at 11 a.m.