The world’s two largest economies did not cut a deal to avert sweeping U.S. tariffs, which came into effect after midnight. Beijing immediately retaliated.

President Trump says the Chinese tariffs are a response to trade deficits, and the flow of fentanyl into the US The United States runs a trade deficit with the European Union, which means it imports more from European countries than it sells to them.

Both Canadian Prime Minister Trudeau and Mexican President Sheinbaum said they had agreed to bolster border enforcement efforts in response to Trump's demand to crack down on immigration and drug smuggling.