US Vice President JD Vance shakes hands with UK Foreign Secretary Yvette Cooper before US President Donald Trump, First Lady Melania Trump, Britain's King Charles III and Queen Camilla participate in an arrival ceremony on the South Lawn of the White House in Washington, DC, on April 28, 2026. (Photo by Mandel NGAN / AFP via Getty Images)

US Secretary of State Marco Rubio (R) speaks with Vice President JD Vance and his wife Usha Vance before President Donald Trump and First Lady Melania Trump 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 Mandel NGAN / AFP via Getty Images)

US Defense Secretary Pete Hegseth and Treasury Secretary Scott Bessent speak before President Donald Trump and First Lady Melania Trump 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 Mandel NGAN / AFP via Getty Images)

US Secretary of State Marco Rubio shakes hands with UK Foreign Secretary Yvette Cooper before US President Donald Trump, First Lady Melania Trump, Britain's King Charles III and Queen Camilla participate in an arrival ceremony on the South Lawn of the White House in Washington, DC, on April 28, 2026. (Photo by Mandel NGAN / AFP via Getty Images)

(L-R) US Second Lady Usha Vance, US Secretary of State Marco Rubio, US Secretary of Treasury Scott Bassent, US Secretary of Defense Pete Hegseth and US Secretary of Commerce Howard Lutnick arrive 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 Jim WATSON / AFP via Getty Images)

A staff member distributes umbrellas to seats before US President Donald Trump, First Lady Melania Trump, Britain's King Charles III and Queen Camilla participate in an arrival ceremony on the South Lawn of the White House in Washington, DC, on April 28, 2026. (Photo by Mandel NGAN / AFP via Getty Images)

Guests wave flags as they wait 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 Mandel NGAN / AFP via Getty Images)

US Secretary of State Marco Rubio shakes hands with UK Foreign Secretary Yvette Cooper before US President Donald Trump, First Lady Melania Trump, Britain's King Charles III and Queen Camilla participate in an arrival ceremony on the South Lawn of the White House in Washington, DC, on April 28, 2026. (Photo by Mandel NGAN / AFP via Getty Images)