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Michelle Singletary's updated column on what to do with your 401(k) when the stock market is turbulent ...

Mexico and Canada were exempted from President Trump's new round of tariffs, but the future of free trade in North America is very much in doubt.

Investors and global leaders have been trying to understand the purpose of sprawling new import duties.

The administration is shutting down the "de minimis" loophole, which could affect businesses ranging from Etsy sellers to e-commerce behemoths.

Americans will bear the brunt of President Donald Trump's new tariffs, with price increases kicking in almost immediately on cars, clothing, electronics and some groceries.

Economists are harshly criticizing the crude formula the Trump administration is using to calculate reciprocal global tariffs.

Other countries vowed to respond after President Donald Trump imposed higher tariffs on imports from much of the world, including many U.S. allies.

The president announced the biggest hike in import duties in modern U.S. history, raising the risks of a recession and stock market downturn.

The Heard and McDonald Islands, a sub-Antarctic territory of Australia, is on the list of reciprocal tariffs -- as is a remote volcanic isle near Greenland.

Trump increased the blanket tariff on Chinese imports to 54 percent and imposed new duties on major trading partners including Japan, South Korea and Taiwan.