Britain's King Charles III and US Speaker of the House Mike Johnson stand for photos before a Joint Meeting of Congress at the US Capitol in Washington, DC, on April 28, 2026. (Photo by Henry NICHOLLS / POOL / AFP via Getty Images)

(L/R) UK Foreign Secretary Yvette Cooper and Britain's King Charles III meet with US Speaker of the House Mike Johnso before a Joint Meeting of Congress at the US Capitol in Washington, DC, on April 28, 2026. (Photo by Henry NICHOLLS / POOL / AFP via Getty Images)

Britain's King Charles III and US Speaker of the House Mike Johnson stand for photos before a Joint Meeting of Congress at the US Capitol in Washington, DC, on April 28, 2026. (Photo by Henry NICHOLLS / POOL / AFP via Getty Images)

Britain's King Charles III and UK Foreign Secretary Yvette Cooper (3L) meet with US Speaker of the House Mike Johnso (2R) before a Joint Meeting of Congress at the US Capitol in Washington, DC, on April 28, 2026. (Photo by Henry NICHOLLS / POOL / AFP via Getty Images)

Britain's King Charles III meets with US Speaker of the House Mike Johnson before a Joint Meeting of Congress in the House Chamber at the US Capitol in Washington, DC, on April 28, 2026. (Photo by Henry NICHOLLS / POOL / AFP via Getty Images)

Britain's King Charles III and US Speaker of the House Mike Johnson stand for photos before a Joint Meeting of Congress at the US Capitol in Washington, DC, on April 28, 2026. (Photo by Henry NICHOLLS / POOL / AFP via Getty Images)

Britain's King Charles III and US Speaker of the House Mike Johnson stand for photos before a Joint Meeting of Congress at the US Capitol in Washington, DC, on April 28, 2026. (Photo by Henry NICHOLLS / POOL / AFP via Getty Images)

The motorcade of Britain's King Charles III makes its way to the US Capitol where he will address a Joint Meeting of Congress in the House Chamber in Washington, DC, on April 28, 2026. (Photo by Aaron Schwartz / AFP via Getty Images)