A new trade flashpoint has erupted between Washington and Ottawa after U.S. President Donald Trump threatened to block the $4 billion Gordie Howe International Bridge linking Michigan and Ontario. In a series of posts, Trump accused Canada of unfair trade practices, demanded compensation and partial U.S. ownership of the bridge, and lashed out over tariffs on American dairy and alcohol. Canadian officials pushed back, fact-checking claims about funding and material use, while tensions escalated over Ottawa’s growing engagement with China.