Philip Burnett Franklin Agee (1935–2008) was a case officer for the Central Intelligence Agency and author of the 1975 book Inside the Company: CIA Diary, which helped expose the CIA's meddling with and support for corrupt authoritarian governments across Latin America. He claimed that involvement with the 1968 Tlatelolco massacre in Mexico City along with his Roman Catholic moral conscience helped to precipitate his decision to leave the CIA.
After his resignation, legal problems prohibited the publication of his book. When it did get finally published, the CIA revoked his passports and continuously had him deported from several Western European countries, with the justification that he had defected and was leaking intelligence to the KGB and other agencies that were enemies of the United States. Much character assassination, persecution, and wiretapping incidents later, he finally settled in Cuba, where he was granted a Cuban passport and where he lived for the rest of his life.
Perhaps as a direct result of his activity, Congress passed the Intelligence Identities Protection Act.