CHICAGO (Reuters) - Two major unions representing 3.2 million workers broke away from the AFL-CIO labor group on Monday in a dispute over declining U.S. union membership and the future direction of organized labor. ... The two unions belong to a dissident group made up of seven unions that want a greater focus on organizing workers and merging smaller unions into larger ones. They charge the AFL-CIO devotes too much of its resources to political lobbying and the central office.