Former Solicitor General Theodore Olson, whose wife was killed in the September 11 attacks, says he feels "a great sense of release and relief" now that Osama bin Laden is dead.
Olson told NBC's "Today" show that "a malignancy in the world has been removed."
Olson was serving in President George W. Bush's Justice Department at the time of the attacks. His wife, conservative commentator Barbara Olson, was aboard the plane that crashed into the Pentagon.
Theodore Olson said Tuesday that at the time, the U.S. "didn't have the tools to collect information on terrorists," so he pushed Congress to change those laws.
He said those new laws allowed the U.S. to gather intelligence that led to Sunday's killing of bin Laden, the al-Qaida terrorist leader behind the 9/11 attacks.