WASHINGTON, DC - JULY 22: U.S. Trade Representative Jamieson Greer gestures as he steps away from reporters following a Senate Finance Committee hearing on July 22, 2026 in Washington, DC. Greer is presenting U.S. President Donald Trump's trade policy agenda as the Trump administration has recently put a 50 percent tariff on certain goods from Canada causing criticism from Canadian Prime Minister Mark Carney and some Republicans. (Photo by Andrew Harnik/Getty Images)