|Federal Security Agency|
|Real Name||Federal Security Agency|
|Team Affiliations||United States Government|
|Allies|| Federal Bureau of Investigation|
Central Intelligence Agency
At some point, Henry Peter Gyrich convinced the FSA to operate registration of mutants under control of the Mutant Control Agency. The X-Men found that the MCA's databases were being used by Sentinels to hunt down and kidnap mutants. They attacked the building and destroyed the files. Later, the president revealed that they had attacked the government operated FSA.
The actual Federal Security Agency was abolished in 1953 and its duties did not include anything security related as X-Men would indicate. It handled the Social Security Board, United States Public Health Service, Food and Drug Administration, Civilian Conservation Corps, Office of Education, National Youth Administration, and several others. Given the implied duties, this FSA is actually closer to the real life National Security Agency.