TOPSHOT - US Vice President JD Vance and House Speaker Mike Johnson applaud as Britain's King Charles III arrives to address 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 speaks to a Joint Meeting of Congress in the House Chamber at the US Capitol in Washington, DC, on April 28, 2026. (Photo by ROBERTO SCHMIDT / AFP via Getty Images)

US Vice President JD Vance and US Speaker of the House Mike Johnson applaud the arrival of Britain's King Charles III to speak to a Joint Meeting of Congress in the House Chamber at the US Capitol in Washington, DC, on April 28, 2026. (Photo by Kent NISHIMURA / AFP via Getty Images)

Britain's King Charles III greets people as he arrives with Queen Camilla to address a Joint Meeting of Congress in the House Chamber at the US Capitol in Washington, DC, on April 28, 2026. (Photo by ROBERTO SCHMIDT / AFP via Getty Images)

Britain's King Charles III, flanked by Queen Camilla, House Speaker Mike Johnson and US Vice President JD Vance, addresses a Joint Meeting of Congress in the House Chamber at the US Capitol in Washington, DC, on April 28, 2026. (Photo by SAUL LOEB / AFP via Getty Images)

Britain's King Charles III speaks to a Joint Meeting of Congress in the House Chamber, while US Vice President JD Vance and US Speaker of the House Mike Johnson listen behind him, at the US Capitol in Washington, DC, on April 28, 2026. (Photo by Kent NISHIMURA / AFP via Getty Images)

Britain's King Charles III, flanked by Queen Camilla, House Speaker Mike Johnson and US Vice President JD Vance, addresses a Joint Meeting of Congress in the House Chamber at the US Capitol in Washington, DC, on April 28, 2026. (Photo by SAUL LOEB / AFP via Getty Images)

Britain's King Charles III arrives with Queen Camilla to address a Joint Meeting of Congress in the House Chamber at the US Capitol in Washington, DC, on April 28, 2026. (Photo by ROBERTO SCHMIDT / AFP via Getty Images)