President Donald Trump posted letters to the leaders of Mexico and the European Union, saying they had not done enough to head off the new tariffs.

Mexico did not face a new tariff on April 2, the day of Trump's so-called "Liberation Day" tariff rollout. There remains a 25% tariff on non-USMCA-compliant goods from Canada and Mexico, as well as a 50% tariff on steel, aluminum and derivative products.

Businesses typically pass tariff costs onto consumers through higher prices. Sometimes, that process is less subtle.

Trump and his aides have repeatedly shifted their stance on tariffs since the president’s “Liberation Day” announcement.

President Trump warns Canadian Prime Minister Mark Carney of a new 35% tariff on Canadian imports if the country doesn't address fentanyl trafficking and existing trade disputes.

Economists and investors are left guessing by President Donald Trump’s tariff agenda as he grants extensions then threatens higher tariffs in letters to trading partners. It remains to be