WASHINGTON, DC - JULY 22: U.S. Trade Representative Jamieson Greer gestures as he speaks to 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)

WASHINGTON, DC - JULY 22: U.S. Trade Representative Jamieson Greer speaks to 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)

WASHINGTON, DC - JULY 22: U.S. Trade Representative Jamieson Greer speaks to 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)

WASHINGTON, DC - JULY 22: U.S. Trade Representative Jamieson Greer departs 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)

President Donald Trump is seen speaking from the East Room of the White House on a television screen in the James Brady Press Briefing Room of the White House, Thursday, July 16, 2026, in Washington. (AP Photo/Julia Demaree Nikhinson)

WASHINGTON, DC - JULY 22: U.S. Trade Representative Jamieson Greer speaks during 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)

WASHINGTON, DC - JULY 22: U.S. Trade Representative Jamieson Greer appears during 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)

WASHINGTON, DC - JULY 22: U.S. Trade Representative Jamieson Greer speaks during 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)