Trump delays 50% Canada tariffs, US and South Korea shorten drills, Tuesday's primary takeaways

President Donald Trump announced a three-day pause on planned 50% tariffs targeting approximately $20 billion in Canadian imports, less than two hours before the sanctions were set to take effect at 12:01 a.m. Wednesday . Trump cited a pending agreement with Canada, subject to final documentation . Canadian Prime Minister Mark Carney confirmed "substantial progress" but acknowledged "important work still to be done" . A White House proclamation said Canada committed to removing measures the administration considers discriminatory against U.S. alcohol, dairy and motor vehicle exports, though Canada has not confirmed those commitments . In a separate development, the U.S. and South Korea shortened annual Ulchi Freedom Shield military exercises at Trump's order, reducing them from 11 days to five and scaling back field training . Officials said neither country was aware of Trump's directive in advance . South Korean officials cited a U.S. proposal for the adjustment . Florida's Tuesday primaries produced mixed results. Progressive Democrat Angie Nixon won her Senate primary, while some Trump-backed candidates faced losses . Republican Byron Donalds secured the gubernatorial nomination with Trump's endorsement .