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

A number of high-profile American business leaders are in China this week for the country's second annual international supply chain expo, including Apple's Tim Cook. "We're very committed to China, that's the reason I have been here three times,

President-elect Donald Trump is threatening to impose sweeping new tariffs on Mexico, Canada and China as soon as he takes office as part of his efforts to crack down on illegal immigration and drugs.