Project MERRIMAC

Project MERRIMAC was a CIA domestic espionage program run by the CIA's Office of Security that placed undercover infiltrators inside antiwar and civil rights organizations in the Washington D.C. area beginning approximately February 1967. It operated in parallel with the larger Operation CHAOS (MHCHAOS) counterintelligence program, feeding collected intelligence upward through an interagency pipeline codenamed CACTUS to both CHAOS and the FBI's COINTELPRO. Unlike Operation CHAOS, which was run through James Jesus Angleton's Counterintelligence Staff, MERRIMAC and its companion program Project RESISTANCE were administered by the Office of Security - a structural distinction that the Church Committee noted in its documentation of the programs.¹

Origins and Rationale

MERRIMAC's stated rationale was defensive: to provide the CIA with advance warning of planned demonstrations or direct action targeting CIA facilities or personnel. This security-protection framing provided a legal basis for the Office of Security's involvement in domestic surveillance, while in practice the program rapidly expanded well beyond advance warning of demonstrations into general intelligence collection on the targeted organizations.¹

Initial Target Organizations

In 1967, the Office of Security designated four "indicator organizations" for initial infiltration:

• Women's Strike for Peace
• Washington Peace Center
• Congress of Racial Equality (CORE)
• Student Nonviolent Coordinating Committee (SNCC)

Active operations against all four organizations began by April 1967. A CIA FOIA document (CIA Reading Room document 00018134, "DOC RELATES TO PROJECT MERRIMAC (MERRIMACK) - SITUATION INFORMATION REPORT") documents the program's early operational period. By June 1967, the collection requirement was formally expanded to include financial operations and sources of funding for targeted organizations, moving definitively beyond the stated security-protection rationale. By August 1968, ten organizations were under active MERRIMAC coverage.¹²

Relationship to Operation CHAOS and CACTUS

MERRIMAC's intelligence products fed into a broader interagency architecture. The CACTUS program served as the conduit between the CIA's CHAOS operation and the FBI's COINTELPRO, transmitting MERRIMAC-generated information on domestic organizations to the FBI and sharing FBI-generated information back to CIA. The resulting information flow allowed both agencies to develop overlapping dossiers on American citizens and organizations that neither could legally have compiled alone.¹

Church Committee Findings

Project MERRIMAC and its companion program Project RESISTANCE were documented in the Church Committee's Book III, "CIA Intelligence Collection About Americans: CHAOS and the Office of Security" (S. Rept. 94-755, April 26, 1976), available at aarclibrary.org/publib/church/reports/book3/pdf/ChurchB3_9_CHAOS.pdf. The Rockefeller Commission addressed the programs in Chapter 11 of its report, available at aarclibrary.org/publib/church/rockcomm/pdf/RockComm_Chap11_CHAOS.pdf.¹

The Church Committee found that MERRIMAC advance notice did serve its stated protective function in some instances, but that this had expanded into "large investigative programs against New Left organizations" that went well beyond any security purpose. The committee documented that MERRIMAC assets collected and disseminated information about targeted groups to other intelligence agencies, functioning as a general domestic intelligence collection system. The committee protected the identities of specific MERRIMAC infiltrators; no MERRIMAC assets have been publicly identified in the declassified record.¹

Exposure

MERRIMAC was exposed as part of the broader CHAOS revelations in Seymour Hersh's December 22, 1974 New York Times article "Huge C.I.A. Operation Reported in U.S. Against Antiwar Forces, Other Dissidents in Nixon Years." Further details emerged during Representative Bella Abzug's 1975 House Subcommittee on Government Information and Individual Rights hearings. The Rockefeller Commission and Church Committee investigations followed.

The formal end date of MERRIMAC operations is generally placed at the same time as CHAOS - officially terminated in March 1974, in the months before Hersh's article but as part of the same institutional decision to wind down the domestic surveillance apparatus. Whether the program continued in any form after March 1974 was not established in available public records.¹

Companion Programs

Project RESISTANCE was MERRIMAC's paired program, collecting information about radical groups near CIA facilities outside Washington D.C. through coordination with campus administrators, local police, and university security offices, rather than through undercover asset placement. Together MERRIMAC and RESISTANCE provided the Office of Security's contribution to the CHAOS program's total collection output.¹