Joe Biden accidentally called “President” to Vice President Kamala Harris

US President Joe Biden repeated a blunder that he had made at least twice before which most recent one in March, during his graduation remarks at South Carolina State University in US on Friday. “All kidding aside, of course President Harris is a proud Howard alum” Biden said while addressed Vice President Kamala Harris as “President” again as he spoke at lectern. Being the 46th President of US, 76 years old Biden known as the oldest person to serve as President in the US history.