Daniel P. Sheehan is an American attorney and activist whose career has included constitutional litigation, public-interest law, and work on politically sensitive investigations. He has been associated with cases and organizations involving the Pentagon Papers, Watergate-era issues, the Karen Silkwood matter, Iran-Contra, Indigenous rights, and environmental causes, although the scope and outcome of his role vary by case. He founded the Christic Institute and later the Romero Institute.

Sheehan’s professional identity has always combined courtroom work with movement building. He has created institutes, trained advocates, delivered public lectures, and framed disputes as conflicts between concentrated power and democratic accountability. In the UAP field, that organizing instinct is as important as his legal representation: he seeks to build a constituency, recruit witnesses, and establish a constitutional narrative capable of sustaining pressure after any single hearing or media cycle has ended.

Sheehan has participated in UFO advocacy for decades and has represented or advised figures connected to modern disclosure, including former government personnel. Through the New Paradigm Institute, he campaigns for hearings, whistleblower protection, records release, and formal acknowledgment of non-human intelligence. He also makes detailed claims about alleged programs and species that exceed what has been substantiated in public records; those statements should be attributed to him rather than treated as established findings.

Sheehan’s role in UAP disclosure is grounded in legal representation, nonprofit organizing, and constitutional argument. He has helped witnesses and activists frame secrecy allegations as questions of congressional authority, civil liberties, and public accountability. His career shows how whistleblower testimony can move through attorneys, advocacy campaigns, and legislative pressure before the underlying classified material reaches public view.