King Charles III visit live updates: Charles, Camilla pay respects at 9/11 Memorial

King Charles, speaking on American independence, said the founding fathers brought with them some ideals rooted in British common law -- including the Magna Carta.

"The U.S. Supreme Court Historical Society has calculated that Magna Carta is cited in at least 160 Supreme Court cases since 1789, not least as the foundation of the principle that executive power is subject to checks and balances," he said.

The remark was met with loud applause from the chamber.

King Charles decried acts of violence as he briefly mentioned the shooting at the White House Correspondents' Association Dinner on Saturday night.

"We meet, too, in the aftermath of the incident not far from this great building that sought to harm the leadership of your nation and to foment wider fear and discord. Let me say with unshakable resolve, such acts of violence will never succeed," he said.

Kicking off his speech, King Charles thanked the American people for being welcomed during the semiquincentennial year of the Declaration of Independence. The remark prompted a huge applause from attendees.

"For all of that time, our destinies as nations have been interlinked," he said.

King Charles and Queen Camilla entered the House chamber to a standing ovation. The applause continued as the two walked down to the dais.