A tense trade battle is unfolding between U.S. President Donald Trump and Canadian Prime Minister Mark Carney over the future of the Canada-United States-Mexico Agreement (CUSMA). Trump has openly questioned whether the United States should remain in the pact, while Carney has vowed to protect Canada's economic interests and keep negotiations alive. With a crucial review of the agreement approaching, businesses, manufacturers and exporters across North America are closely watching what could become the biggest shake-up to regional trade in years. Is CUSMA headed for reform, renewal—or a political showdown? Watch the full breakdown of Trump's latest comments, Carney's response and what it means for the U.S., Canada and Mexico.