A government official says Canada is already examining possible retaliatory tariffs on certain items from the United States should President-elect Donald Trump follow through on his threat to impose sweeping tariffs on Canadian products.

Neither his claim that border crossings are an unchecked “invasion” nor his depiction of drugs pouring across an unguarded border has any basis in federal data.

Mexico and Canada are the United States’ top two trading partners, accounting for nearly 30% of trade volumes.