Huffman v. Office of Personnel Management, 263 F.3d 1341 (Fed. Cir. 2001) is a decision by the United States Court of Appeals for the Federal Circuit addressing a two decade-old conflict between the United States Congress and the U.S. Court of Appeals for the Federal Circuit over the depth of whistleblower protection available to federal civilian employees covered by the Whistleblower Protection Act of 1989. The discourse revolves around the meaning of the word 'any'.