In a dispute that dates back decades, the Trump administration announced it will levy a tariff on imports of softwood lumber from Canada, which is used primarily in housing construction.
President Trump has called NAFTA a "catastrophe" and threatened to impose a border tax on Mexican imports. How does that impact produce companies with operations on both sides of the border?
Talks between Secretary of State Rex Tillerson and Homeland Security chief John Kelly with their Mexican counterparts were intended to smooth out growing tensions between the two countries.
Trade in food between the U.S. and Mexico has exploded over the past 15 years. President Trump is talking about restricting that trade, but when it comes to food, such moves could backfire.
There's concern that Canada may get swept up in any disagreement or trade war between the U.S. and Mexico. Canada's ambassador has said Canada needs to avoid becoming "collateral damage."
NAFTA critics say money and jobs go to Mexico, but U.S. companies, like Kansas City Southern, do benefit. The company, built around trade with Mexico, has been hit hard by Trump's victory.
Robert Lighthizer, 69, has long advocated a tougher stand on trade with China, which is in line with President-elect Donald Trump's campaign rhetoric.
NAFTA has long united the economies of the United States, Mexico and Canada. With Donald Trump headed to the White House, trade partners say they're open to talks.
Analysts say Trump is likely to kill off TPP, reshape NAFTA and impose tariffs. But economists fear those moves could set off a trade war.
Candidates vying for president are talking a lot about trade. But trade is not a subject easily summed up in slogans. Here are resources to help you study up on trade and make your own decisions.