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FMCSA adopts certain requirements of the interim final rule (IFR) published on May 5, 2003 (2003 IFR), and the IFR published April 29, 2005 (2005 IFR), as final, without change. The 2003 IFR amended the Federal Motor Carrier Safety Regulations (FMCSRs) to prohibit States from issuing, renewing, transferring, or upgrading a commercial driver's license (CDL) with a hazardous materials endorsement unless the Transportation Security Administration (TSA) in the Department of Homeland Security has first conducted a security threat assessment of the applicant and determined that the applicant does not pose a security risk warranting denial of the hazardous materials endorsement, as required by the Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act of 2001 (USA PATRIOT Act). The 2005 IFR amended the FMCSRs to conform to the TSA's compliance date and reduce the amount of advance notice that States must provide to drivers that a security threat assessment will be performed when they renew a hazardous materials endorsement.