As a follow up to my argument...
'In its first 25 years, the Central Intelligence Agency violated its charter by plotting assassinations, funding behavioral and drug studies that included "unwitting participants," opening U.S. mail, creating dossiers on nearly 10,000 American dissidents, wiretapping journalists to root out their sources, and interrogating a Soviet defector against his will for two years, according to a summary of a decades-old CIA report on the agency's activities released Thursday by the National Security Archive, an open government group.'
They may not SAY they operate on U.S. soil, or it may be against their charter, but they clearly do.
http://blog.wired.com/27bstroke6/200...eep-secre.html