“[T]his Committee has learned that one official, whose position has no apparent intelligence-related function, made hundreds of unmasking requests during the final year of the Obama Administration,” he wrote to Director of National Intelligence Dan Coats.

Only one request, Nunes wrote, “offered a justification that was not boilerplate and articulated why” the identity was needed for official duties.

Three of the nation’s intelligence agencies received subpoenas in May explicitly naming three top Obama administration officials: Former CIA director John Brennan, former national security adviser Susan Rice, and former U.N. ambassador Samantha Power.