Trump Takes Jab at Canada Over Becoming 51st State. U.S. President Donald Trump took a playful jab at Canada, joking about it becoming the 51st state of the United States while humorously suggesting it could keep "O Canada" as its national anthem.

Canadian hockey fans began booing the American national anthem at Bell Centre in Montreal when Team USA played there on Saturday — sparking three fights to break out in the first nine seconds of the game, which the US won 3-1 with Canadian Prime Minister Trudeau in attendance.

Chantal Kreviazuk, who performed the Canadian anthem prior to the 4 Nations Face-Off title game Thursday changed a lyric as a rebuke to President Trump's repeated remarks about making the country the 51st state.