US President Joe Biden visited Arlington National Cemetery to lay flowers at the Tomb of the Unknown Soldier on Monday, May 29, to mark Memorial Day.Video streamed live by the US Army shows the wreath-laying ceremony on Monday morning. Vice President Kamala Harris and Secretary of Defense Lloyd Austin also participated in the ceremony.Following the ceremony, Biden delivered a speech to attendees. “We are the only nation in the world built on an idea that we are all created equal,” Biden said. "We haven’t always lived up to it, but we have never walked away from it.“God bless all those who gave their lives so our nation might live. God bless their families, and may God protect our troops today and always,” he concluded. Credit: US Army via Storyful