Mexico said it would slap tit-for-tat tariffs on the US, while China said Trump's finger-pointing "runs completely counter to facts".

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

TORONTO (AP) — Some Canadian officials on Tuesday blasted President-elect Donald’s Trump’s threat to impose sweeping tariffs, as the leader of the country’s most populous province called Trump’s comparison of Canada to Mexico “the most insulting thing I’ve ever heard.”