Operation MERRIMAC CIA Domestic Infiltration Program
Project MERRIMAC mattered because it showed how quickly a security mission could become an intelligence system. What began as a claimed effort to give the CIA early warning of demonstrations and threats against its facilities turned into infiltration of Washington-based dissident groups, reporting on leadership and finances, photography of meetings and attendees, and a larger pattern of domestic collection that the Agency was not supposed to own. In that form, MERRIMAC became one of the most revealing Cold War programs of the 1960s and early 1970s. It was not glamorous. It did not involve exotic aircraft or hidden undersea taps. It involved meetings, informants, envelopes, reports, and the bureaucratic habit of asking for more than a limited mission required. That is why MERRIMAC stands out. It made the black-project state look administrative, and that made it more dangerous.