President Donald Trump on Saturday threatened duties of 30% on products from Mexico and the European Union, two of America’s biggest trading partners, in an ongoing tariff campaign that’s upended global trade since he retook office in January.

MSNBC's Lawrence O'Donnell and Jen Psaki discuss the breaking news that Donald Trump is now threatening Canada with tariffs of 35% claiming the "flow of fentanyl" from America's northern neighbor as his reason.

Doubling down on his trade wars, President Trump is threatening to raise taxes on many goods from Canada and punish Brazil for prosecuting his friend.

President Trump's move to impose a 50% tariff on U.S. copper imports targets a vital metal that is widely used in many products and industries. That could lead to higher prices for everything from appliances and electronics to cars and home repairs,

U.S. President Donald Trump's announcement of a proposed 50% tariff on copper imports has raised concerns in Chile and Peru, which together account for nearly 40% of global copper production.

President Trump has announced — but postponed the effective date for — higher tariffs once again. Here's what to know about the latest on his tariff policy.

Donald Trump has postponed global tariffs, offering nations more time for trade talks. However, Canada's deadline remains unchanged. Ottawa must finalize a deal with the US by July 21. Discussions focus on economic and security ties.

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