Canada has cancelled a joint bridge-opening celebration with the United States, a decision that follows US President Donald Trump's announcement of a 50% tariff on most Canadian goods.

The celebration was planned for the Gordie Howe International Bridge, which connects Detroit, US, and Windsor, Ontario, Canada. The ribbon-cutting ceremony had been scheduled for Friday.

Trump announced the 50% tariff on most Canadian goods, accusing Canada of unfairly discriminating against US automobiles, alcohol and dairy products.