Financial markets, which have shown increasing insensitivity to tariff threats from the US, will face a test at the Monday open after President Donald Trump declared a 30% rate for the European Union and Mexico effective Aug.

Alex Witt spoke with New York Times White House Correspondent Tyler Pager about what might be motivating President Trump to impose 30% tariffs on Mexico and the E.U. She also asked him about the President's upcoming announcement about Russia,

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.

President Donald Trump has posted two new letters on his social media platform announcing tariffs on the European Union and Mexico.

America’s biggest trading partners have tried tactics ranging from appeasement to retaliation to avoid higher tariffs. All find themselves faced with similar threats from Washington.

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.

U.S. President Donald Trump has launched a global trade war with an array of tariffs that target individual products and countries. Trump has set a baseline tariff of 10% on all imports to the United States,

Trump insiders maintain that it would make little sense — politically or from a policy standpoint — for the president to offer any further extensions on trade.