Navy Yard Shooting Revives Calls to Expand Background Checks

Navy Yard Shooting Revives Calls to Expand Background Checks

Jewel Samad/AFP via Getty Images

A member of the U.S. Secret Service Uniformed Division stands guard as the national flag flies half-mast on the roof of the White House on Sept. 17, 2013, a day after a deadly shooting at the Navy Yard in Washington, D.C.