Major labor unions and business groups clashed Tuesday over President Barack Obama's bid for "fast track" authority to advance trade deals being negotiated with numerous nations. TAFL-CIO president Richard Trumka, right, and U.S. Chamber of Commerce President Tom Donohue prepare to testify on Capitol Hill in Washington, Tuesday, April 21, 2015, before a Senate Finance Committee hearing on Obama's bid for "fast track" authority to advance trade deals being negotiated with numerous nations. in shaping trade deals.

Labor Unions, Business Lobby Clash Over Obama’s Bid For TPP “Fast Track” Authority

Rather than building support and momentum for fast track, introduction of the fast-track bill seems to have had the opposite effect of galvanizing opposition and spurring mobilization against it.