The Intelligence Reform and Terrorism Prevention Act of 2004 (IRTPA) is a comprehensive U.S. federal law enacted in response to the September 11, 2001 terrorist attacks. Signed into law by President George W. Bush on December 17, 2004, it represents the most significant overhaul of the U.S. intelligence community since the National Security Act of 1947. The act's primary purpose was to address the 9/11 Commission's recommendations by restructuring the intelligence apparatus to improve coordination, information sharing, and counterterrorism efforts. Key provisions include the creation of the position of Director of National Intelligence (DNI) to oversee and coordinate the 16 intelligence agencies; the establishment of the National Counterterrorism Center (NCTC) to serve as a hub for joint counterterrorism analysis and planning; enhancements to border security, immigration enforcement, and visa screening processes; reforms to the FBI to strengthen its intelligence capabilities; and updates to terrorism-related laws, including provisions on terrorist travel prevention, information sharing, and privacy protections. The 235-page legislation comprises nine titles covering intelligence reform, terrorism prevention, border protection, and other security measures. Its impact has been profound, centralizing intelligence leadership under the DNI (first held by John Negroponte), improving inter-agency collaboration, and influencing subsequent national security policies, though it has faced criticism for potential overreach in surveillance and civil liberties concerns.