US actress Ashley Judd has joined Hollywood megastar George Clooney in calling on US President Joe Biden to leave the presidential race, as more and more of the Democrat’s supporters are having a change of heart amid concerns about his mental fitness. In an op-ed published by USA Today on Friday, Judd asked the 81-year-old president, who is looking for a second term in November’s presidential elections, to “voluntarily, gracefully, step aside” in favour of “a talented, robust Democrat to be our party’s nominee.” Judd said making this call hadn’t been easy for her as an avid supporter of the De…