TSA estimates there are about 2.7 million truckers licensed to carry hazardous materials. The new rule is the third and final phase of the agency's Hazmat Threat Assessment Program.

TSA may begin air passenger background checks in 2009 Agency will review each airline passenger against the government's no-fly list. Chris Strohm | April 16, 2008 ...

The U.S. General Accounting Office finds the Transportation Security Administration is doing a good job on fingerprint-based background checks of workers with unescorted access to security areas ...