The International Longshoremen's Association, AFL-CIO, posted news of the ratification on its website late Tuesday.

WSJ: Dockworkers ratify new 6-year contract

AFL-CIO President Richard Trumka told Yahoo News on Tuesday that his labor federation representing 12 million people will mount a "full-fledged" campaign in support of comprehensive immigration reform.

CNN: 'Now's the time' to move on immigration, Obama says

Last July, a group of labor leaders, including Obama ally and AFL-CIO President Richard Trumka, joined Unite Here at a news conference in Washington, where Unite Here called for a global boycott of Hyatt Hotels.

WSJ: Pritzker Choice as Commerce Pick Could Cause Rift