America is about to face an existential crisis, starting with an election that could return Donald Trump to power – a man who stoked a violent mob that sought to overturn our democracy. We’ll need leaders of integrity and moral courage, who can stand up to extremist nonsense. “Courage is being scared to death, but saddling up anyway,” as John Wayne once said. But not for Senate Democrats from swing states, apparently. These folks may not even have the mettle to defend Joe Biden’s judicial pick from New Jersey – a historic Muslim American nominee who’s become the target of a vicious and bigoted…