AFL-CIO   American Federation of Teachers  Air  Line Pilots Association  American Federation  of Government Employees   American Federation of Television and Radio Artists   American Federation of State, County, and Municipal Employees  Amerian Postal Workers Union   Association of Flight Attendants   Communication Workers of America   International Association of Machinists and Aerospace Workers   International Brotherhood of Boilermakers   International Brotherhood of Electrical Workers   International Brotherhood of Teamsters   International Union of Bricklayers   Laborers' International Union of North America   Major League Baseball Players Association  National Air Traffic Controllers Organization   National Education Association  National Treasury Employees Union   Oil, Chemical, and Atomic Workers Union   Screen Actors Guild   Service Employees International Union  United Auto Workers United Farm Workers of America   United Food and Commercial Workers   United MineWorkers   United Paperworkers International Union   United Steelworkers of America