Former Chicago Mayor Lori Lightfoot was critiqued during a lengthy confirmation hearing for acting Attorney General Todd Blanche on Wednesday for signing onto a letter that urged the U.S. Senate to reject his confirmation — a proceeding that saw no references to the credibility crisis happening under Chicago U.S. Attorney Andrew Boutros’ watch. U.S. Sen. John Kennedy, R-La., also took aim at Lightfoot’s 2019 primary election loss — and accused …