In announcing the tariffs, Trump accused Canada of unfairly discriminating against U.S. automobiles, alcohol and dairy products, escalating tensions with one of the United States' closest allies.

"In light of trade action threatened by the United States earlier this week, it would be inappropriate to proceed with a celebratory event between the two countries," said Jenna Ghassabeh, a spokesperson for Canadian Infrastructure Minister Gregor Robertson, in an emailed statement.

The move came after U.S. and Canadian officials reached an agreement earlier this month to open the Gordie Howe International Bridge following delays tied to disagreements between the two countries.

Canada now plans to hold its own ceremony Friday. It is now unclear whether the United States will hold a separate ceremony.