CNN By Samantha Waldenberg, Kevin Liptak, Alayna Treene and David Goldman, CNN (CNN) — President Donald Trump announced extraordinary new tariffs on Mexico, Canada and China — signing the ...

President Donald Trump has said he will stick to his pledge to impose aggressive new tariffs on Canada, Mexico and China today. Follow for live updates.

Tariffs are typically charged as a percentage of the price a buyer pays a foreign seller. In the United States, tariffs are collected by Customs and Border Protection agents at 328 ports of entry ...