WASHINGTON, DC - APRIL 28: The United States Army Presidential Salute Battery enters the South Lawn of the White House during a state arrival ceremony with King Charles III and Queen Camilla on April 28, 2026 in Washington, DC. President Trump and King Charles III will participate in a number of activities including a bilateral meeting in the Oval Office, with the king later addressing a joint meeting of the United States Congress. (Photo by Chip Somodevilla/Getty Images)

Guests sit in the rain while waiting for US President Donald Trump and First Lady Melania Trump to greet Britain's King Charles III and Queen Camilla during an arrival ceremony on the South Lawn of the White House in Washington, DC, on April 28, 2026. (Photo by Brendan SMIALOWSKI / AFP via Getty Images)

Guests sit in the rain while waiting for US President Donald Trump and First Lady Melania Trump to greet Britain's King Charles III and Queen Camilla for an arrival ceremony on the South Lawn of the White House in Washington, DC, on April 28, 2026. (Photo by Aaron Chown / POOL / AFP via Getty Images)

President Donald Trump and Britain's King Charles III turn to walk into the White House, Monday, April 27, 2026, in Washington. (AP Photo/Alex Brandon)

President Donald Trump and first lady Melania Trump greet King Charles III and Queen Camilla as they arrive at the White House, Monday, April 27, 2026, in Washington. (AP Photo/Alex Brandon).

President Donald Trump and Britain's King Charles III talk at the White House, Monday, April 27, 2026, in Washington. (AP Photo/Alex Brandon).

WASHINGTON, DC - APRIL 28: People wait in the rain before a state arrival ceremony with King Charles III and Queen Camilla on the South Lawn of the White House on April 28, 2026 in Washington, DC. President Trump and King Charles III will participate in a number of activities including a bilateral meeting in the Oval Office, with the king later addressing a joint meeting of the United States Congress. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - APRIL 28: People wait in the rain before a state arrival ceremony with King Charles III and Queen Camilla on the South Lawn of the White House on April 28, 2026 in Washington, DC. President Trump and King Charles III will participate in a number of activities including a bilateral meeting in the Oval Office, with the king later addressing a joint meeting of the United States Congress. (Photo by Chip Somodevilla/Getty Images)