Letter to Jeri Williams, Chief of the Phoenix Police Department, Danielle Outlaw, Commissioner of the Philadelphia Police Department, Major Reuben Ramirez, Internal Affairs Division for the Dallas Police Department, Colonel John Hayden, Jr., Commissioner of the St. Louis Police Department, Osborne Robinson, Commissioner of the York City Police Department, Craig Kingsbury, Chief of the Twin Falls Police Department, Mike Gudgel, Chief of the Denison Police Department, and Peyton Grinnell, Sheriff of Lake County - Subcommittee Seeks Documents in Investigation of White Supremacists Infiltrating Law Enforcement Agencies