The P&S Act is administered by the Grain Inspection, Packers and Stockyards Administration (GIPSA) of the United States Department of Agriculture. In 2010, GIPSA Administrator J. Dudley Butler and United States Assistant Attorney General for Antitrust Christine A. Varney held a series of hearing on monopsony, market manipulation, and market concentration in agriculture. On June 22, 2010, GIPSA published a proposed rule that would have reduced the legal standard for anti-competitive practices, forbidden unfair practices and undue advantages even without harm to competition, and ensured producers had access to arbitration. In addition, the proposed rule sought to combat price fixing by prohibiting packers from selling to other packers and preventing multiple packers from using a single buyer.