April 1 (UPI) -- Congressional leaders invited King Charles III to address a joint meeting of Congress when he and Queen Camilla visit the United States in late April.

Charles is visiting to mark the 250th anniversary of American independence from Britain. It would be the first address to Congress by a British monarch in 35 years.

A letter was sent Wednesday signed by House Speaker Mike Johnson, R-La., Senate Republican leader John Thune, R-S.D., Senate Democratic leader Charles Schumer, D-N.Y., and House Democratic leader Hakeem Jeffries, D-N.Y.

"As we celebrate this historic milestone and recommit ourselves to the principles upon which our nation was founded, we also recognize that the American experiment endures in no small part because of the British tradition from which it sprang," the letter said.

"We believe an Address to Congress will provide a unique opportunity to share your vision for the future of our special relationship and reaffirm our alliance at this pivotal time in history," it continued. "The United States Congress would be honored to host Your Majesty for this historic event, which will celebrate the shared heritage and enduring friendship between the United Kingdom and the United States."