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)

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: British and American flags are displayed on chairs 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 Kevin Dietsch/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 Kevin Dietsch/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 Kevin Dietsch/Getty Images)

An attendee protects himself from 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 Jim WATSON / AFP via Getty Images)

An attendee protects herself from 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 Jim WATSON / AFP via Getty Images)