"The National Counterterrorism Center (NCTC) was established post-9/11 to, “produce integrated and interagency-coordinated analytic assessments on terrorism issues and publishes warnings, alters, and advisories as appropriate.” In practice, NCTC acts as an internal clearinghouse to take intelligence and information from law enforcement and the intelligence community and, in turn, provide information to law enforcement and intelligence agencies that are authorized to see it. For example, it ensures that the FBI has all of the intelligence it is authorized to see and that the CIA has all of the law enforcement information that it is authorized to see. Similarly, border officials and state and local law enforcement are authorized to see intelligence or federal law enforcement information only in narrow parameters and in narrow circumstances; NCTC ensures that they have that information without exceeding their authorities, which is critical to interdicting known and suspected terrorists because border and local law enforcement officials are typically the front line in interdiction. NCTC is not legally authorized to examine domestic terrorism information because it was authorized by the Intelligence Reform and Terrorism Prevention Act, which is specific to international terrorism issues. NCTC may develop expertise on domestic terrorism only as a comparison to international terrorism, which severely limits its analytical abilities, and it lacks any ability to share information on domestic terror."