President Trump says Americans could feel 'some pain' from the emerging trade war he triggered with tariffs against Canada, Mexico and China.

The move likely will trigger retaliation and risk igniting a trade war that could cause broad economic disruption for all countries involved.

President Donald Trump has signed an order to impose stiff tariffs on imports from Mexico, Canada and China, drawing swift retaliation from the U.S.’s North American neighbors in an emerging trade war.