'That the Obama campaign has chosen to portray me as a 9/11 Truther just shows how sloppy and inaccurate the research going into their rebuttal was," said Corsi, a senior staff writer for WND. "Let me make clear that I fully accept and endorse the conclusion of the 9/11 Commission that the Islamic hijackers who flew the airplanes into the World Trade Center and the Pentagon were the sole cause of the attack.'