The White House didn’t hold back when responding to South Carolina Republican Rep. Nancy Mace, who attacked him on the social media site X on Thursday. Mace went on the attack about an hour after it was announced that President Joe Biden’s White House negotiated a prisoner swap to bring home three Americans and one Green Card holder imprisoned by Russia — a move heralded by USA Today as “the largest prisoner swap since the Cold War.” “Biden is MIA,” Mace wrote, meaning “Missing In Action.” Want more breaking political news? Click for the latest headlines at Raw Story. She asked, “Why is no one…