President Donald Trump on Tuesday called on the Senate to keep the United States' tariffs on Canada in place -- hours before Democrats in the upper chamber could potentially force a vote aimed at blocking the president from imposing tariffs on the ally country.

Canada must stand in solidarity with the international community to exert collective pressure on the U.S. A co-ordinated global response could compel Trump to reconsider his unilateral trade policies.

The move is a direct retaliation to Donald Trump's levies, indicating escalating trade tensions between the two nations.