Infamous social conservative and former Sen. Rick Santorum (R-PA) says that while Sarah Palin has “done a lot to draw attention to herself that’s positive,” if she ran for the White House, she’d “have to do some explaining.” Santorum allows that Palin is “having an impact” on the country, despite not holding public office. Santorum, who lost his reelection race to current Sen. Bob Casey (D-PA), told Politico that he’s weighing his own 2012 bid.