President Biden is resisting Republican demands to warn Iran in no uncertain terms that killing former President Trump would be an act of war. The White House declined to comment on the specific demands but referred to a statement on the recent Iranian threats to Trump's life. On Tuesday, top U.S. intelligence officials briefed Trump about threats from Iran to assassinate him, his campaign said. Trump prodded Biden to warn Iran it was risking hot war with the U.S. with such threats. House Intelligence Chair Mike Turner also demanded Biden warn Iran.