Signs from the UAW's unsuccessful campaign in Chattanooga.

Bill Haslam, left, and Bob Corker

The United Auto Workers has served 20 subpoenaes for an April 21 National Labor Relations Board hearing on its appeal of February's Chattanooga Volkswagen plant vote, including to Tennessee Gov. Bill Haslam and U.S. Sen. Bob Corker, documents show.

The UAW also is seeking testimony from Tennessee Economic Development Commissioner Bill Hagerty; Will Alexander, aide to Hagerty and son of U.S. Sen. Lamar Alexander; state House Majority Leader Gerald McCormick, R-Chattanooga; and state Sen. Bo Watson, R-Chattanooga. In addition, the UAW has served a subpoena on state House Speaker Beth Harwell.

Also among those on the subpoena list are Ron Harr, the Chattanooga Area Chamber of Commerce's chief executive and Tim Spires, who heads the Chattanooga Regional Manufacturers Association.

Grover Norquist, of Americans for Tax Reform, and Matt Patterson, of that group's Center for Worker Freedom, were subpoenaed as well. Maury Nicely of the anti-union group Southern Momentum was subpoenaed, too.

The subpoenaes also seek documents related to the UAW vote at the plant. The UAW lost the election by a 53 percent to 47 percent margin and appealed for a revote to the NLRB, claiming interference by third-party groups and politicians. The hearing is slated to be held in Chattanooga.

See more in Thursday's Times Free Press.