US President Donald Trump speaks after signing a presidential memo on pollution control in vehicles at the Oval Office of the White House in Washington, DC, on June 29, 2026. (Photo by SAUL LOEB / AFP via Getty Images)

US President Donald Trump speaks after signing a presidential memo on pollution control in vehicles at the Oval Office of the White House in Washington, DC, on June 29, 2026. (Photo by SAUL LOEB / AFP via Getty Images)

US President Donald Trump speaks after signing a presidential memo on pollution control in vehicles at the Oval Office of the White House in Washington, DC, on June 29, 2026. (Photo by SAUL LOEB / AFP via Getty Images)

US President Donald Trump speaks after signing a presidential memo on pollution control in vehicles at the Oval Office of the White House in Washington, DC, on June 29, 2026. (Photo by SAUL LOEB / AFP via Getty Images)

Pedestrians pass by a banner of US President Donald Trump on the side of the US Department of Labor headquarters building in Washington, DC on June 29, 2026. (Photo by Mandel NGAN / AFP via Getty Images)

A scooter rider passes by a banner of US President Donald Trump on the side of the US Department of Labor headquarters building in Washington, DC on June 29, 2026. (Photo by Mandel NGAN / AFP via Getty Images)

A pedestrian passes by a banner of US President Donald Trump on the side of the US Department of Labor headquarters building in Washington, DC on June 29, 2026. (Photo by Mandel NGAN / AFP via Getty Images)

The U.S. Capitol and a mock-up of President Donald Trump's proposed triumphal arch are seen from the ferris wheel at the Great American State Fair on the National Mall, Thursday, June 25, 2026, in Washington. (AP Photo/Jen Golbeck)