A never-before-used trade law could put thousands of imports in the crosshairs. Learn which products may cost more and how to get ahead of potentially higher prices.

Trump's new 50 percent tariffs on Canadian goods could affect everything from wine and cheese to autos and hockey sticks.

By David Lawder MEXICO CITY, July 21 (Reuters) - U.S. and Mexican trade negotiators launched a third round of bilateral talks on Tuesday to try to revise the North American trade agreement, just as President Donald Trump said he would impose new duties on Canada.

The duties take effect within 30 days and mark a major escalation in trade tensions between the North American neighbours.