In this Feb. 14, 2014, photo, United Auto Workers President Bob King, left, and Dennis Williams, now secretary-treasurer for the union, right, discuss the union's 712-626 defeat in an election at the Volkswagen plant in Chattanooga, Tenn. The UAW on Friday, Feb. 21, 2014, filed an objection with the National Labor Relations Board seeking to vacate the result and order a new election. (AP Photo/Erik Schelzig)
In this Feb. 14, 2014, photo, United Auto Workers President Bob King discusses the union's 712-626 defeat in an election at the Volkswagen plant in Chattanooga, Tenn. The UAW on Friday, Feb. 21, 2014, filed an objection with the National Labor Relations Board seeking to vacate the result and order a new election. (AP Photo/Erik Schelzig)
College Athletes Players Association designated president Ramogi Huma, left, and Northwestern University outgoing senior quarterback Kain Colter make their way to the beginning of three days of hearings before the National Labor Relations Board Tuesday, Feb. 18, 2014, in Chicago. The NLRB is scheduled to begin witness testimony on whether to approve a bid by Northwestern University football players who are trying to unionize. Colter is among the key witnesses in the case. (AP Photo/M. Spencer Green)
College Athletes Players Association designated president Ramogi Huma, right, and Northwestern University Wildcats' outgoing senior quarterback Kain Colter make their way to the beginning of three days of hearings before the National Labor Relations Board Tuesday, Feb. 18, 2014, in Chicago. The NLRB is scheduled to begin witness testimony on whether to approve a bid by Northwestern University football players who are trying to unionize. Colter is among the key witnesses in the case. (AP Photo/M. Spencer Green)
Northwestern University outgoing senior quarterback Kain Colter makes his way to the beginning of three days of hearings before the National Labor Relations Board Tuesday, Feb. 18, 2014, in Chicago. The NLRB is scheduled to begin witness testimony on whether to approve a bid by Northwestern University football players who are trying to unionize. Colter is among the key witnesses in the case. (AP Photo/M. Spencer Green)
Northwestern University spokesman Bob Rowley speaks to the media after a National Labor Relations Board hearing on the request by Northwestern football players to unionize in Chicago, Wednesday, Feb. 12, 2014. (AP Photo/Paul Beaty)
Northwestern University spokesman Bob Rowley speaks to the media after a National Labor Relations Board hearing on the request by Northwestern football players to unionize in Chicago, Wednesday, Feb. 12, 2014. (AP Photo/Paul Beaty)
Attorney for the College Athletes Players Union John Adam speaks to the media after a National Labor Relations Board hearing on the request by Northwestern University football players to unionize in Chicago, Wednesday, Feb. 12, 2014. (AP Photo/Paul Beaty)
Northwestern University spokesman Bob Rowley speaks to the media after a National Labor Relations Board hearing on the request by Northwestern football players to unionize in Chicago, Wednesday, Feb. 12, 2014. (AP Photo/Paul Beaty)
Attorney for the College Athletes Players Union John Adam speaks to the media after a National Labor Relations Board hearing on the request by Northwestern University football players to unionize in Chicago, Wednesday, Feb. 12, 2014. (AP Photo/Paul Beaty)
Attorney for the College Athletes Players Union John Adam speaks to the media after a National Labor Relations Board hearing on the request by Northwestern University football players to unionize in Chicago, Wednesday, Feb. 12, 2014. (AP Photo/Paul Beaty)
Attorney for the College Athletes Players Union John Adam speaks to the media after a National Labor Relations Board hearing on the request by Northwestern University football players to unionize in Chicago, Wednesday, Feb. 12, 2014. (AP Photo/Paul Beaty)