This investigation revealed hundreds of airport ID's have been lost or stolen at some of the nation's busiest airports. Some missing badges were not deactivated for days or weeks because employees or companies failed to notify airport police. Those badges allow workers to bypass security screening and access the most secure areas unchecked. As a result of our reports, a bi-partisan group of U.S. Senators has introduced a bill that directs the TSA to increase fines for airports, airport workers and employers who fail to report badges lost or stolen right away. And it requires all large U.S. airports to notify Congress if more than 3% of an airport's ID's are missing. Our reporting also prompted the Department of Homeland Security Inspector General to launch an ongoing review of lost and stolen ID's. Our team produced and reported the story for NBC Nightly News and the TODAY Show, bringing our findings to a national audience.