The Inspector General of the Central Intelligence Agency (CIA) did a review of the CIA's pre-9/11 performance. He was very critical of senior CIA officials for not doing everything possible to stop terrorism. He criticized their failure to stop two of the 9/11 hijackers, Nawaf al-Hazmi and Khalid al-Mihdhar, as they entered the United States. He also criticized their failure to share information on the two men with the FBI. In May 2007, senators from both major U.S. political parties wrote legislation to make the review public. One of the backers, Senator Ron Wyden said, "The American people have a right to know what the Central Intelligence Agency was doing in those critical (important) months before 9/11."