US President Joe Biden defends his mental competence after a special counsel investigation into his mishandling of classified documents criticised his “poor memory.” Furious and emotional, the 81-year-old struck back in a televised speech from the White House – before committing a new gaffe, confusing the presidents of Mexico and Egypt. The report cleared him of any criminal wrongdoing in his storing of the classified documents which he'd used while vice president under Barack Obama, at his priv