He told a news conference that diversity hiring efforts at the Federal Aviation Administration may have led to safety issues.
With officials saying no one has survived the crash, efforts have since shifted to recovering bodies in Potomac River.
A deadly midair collision between an American Airlines jet and an Army helicopter near the nation's capital is bringing ...
Ryan O'Hara, 29, was the crew chief of the Black Hawk helicopter that collided with the passenger plane, according to CBS ...
A timeline of the Washington, D.C., plane crash on Jan. 29 details the moments before and after an American Airlines ...
The crash of an American Airlines passenger jet and a U.S. Army Black Hawk helicopter near Reagan Washington National Airport ...