A lot of legal experts appeared worried after the Supreme Court heard oral arguments in Donald Trump’s immunity case, but there’s no way the right-wing justices are going to buy all of what the former president is selling, a former FBI agent said on Saturday. Former FBI special agent Asha Rangappa weighed in on the Supreme Court hearing, pointing out the novelty of Trump’s absolute presidential immunity argument that would see an ex-president avoid any charges as long as they weren’t convicted at an impeachment trial. “I don’t know who needs to hear this, but the requirement that a POTUS needs…