Steve Kramer‚ a veteran political consultant working for a rival candidate‚ acknowledged Sunday that he commissioned the robocall that impersonated President Joe Biden using artificial intelligence‚ confirming an NBC News report that he was behind the call.  In a statement and interview with NBC News‚ Kramer expressed no remorse for creating the deepfake‚ in which an imitation of the president’s voice discouraged participation in New Hampshire’s Democratic presidential primary. The call...