successful national campaign to defeat the relief rider, which was defeated by a vote of 94,086 to 13,082. The pressure on the freight industry and the national freight agreement continued, however. By the end of the 1990s the National Master Freight Agreement, which had covered 500,000 drivers in the late 1970s, dropped to fewer than 200,000, with numerous local riders weakening it further in some areas. Internal and external challenges The decline in working conditions in the freight industry, combined with long-simmering unhappiness among members employed by the United Parcel Service, led to the development of two nationwide dissident groups within the union in the 1980s: Teamsters for a Democratic Union (TDU), an assemblage of a number of local efforts, and the Professional Drivers Council, better known as PROD, which began as a public interest group affiliated with Ralph Nader that was concerned with worker safety. The two groups merged in 1979. TDU was able to win some local offices within the union, although the International Union often attempted to make those victories meaningless by marginalizing the officer or the union. TDU acquired greater prominence, however, with the election reforms forced on the union by the consent decree it had entered into in 1989 on the eve of trial on a suit brought by the federal government under the Racketeer Influenced and Corrupt Organizations Act (RICO). The decree required the direct election of International officers by the membership, as TDU had been demanding for years leading up to the decree, to replace the indirect election by delegates at the union's convention. While the delegates at the union's 1991 convention balked at amending the Constitution, they ultimately capitulated under pressure from the government. That consent decree might not have been possible, however, if it had not been for the testimony of Roy Williams, who described, in an affidavit he gave the government in return for a delay of his imprisonment, his own dealings with organized crime as the Secretary-Treasurer of a local union in Kansas City and as an officer of the International Union. The decree also gave the government the power to install an Independent Review Board with the power to expel any member of the union for "conduct unbecoming to the union", which the IRB proceeded to exercise far more aggressively than the Teamsters officials who had agreed to the decree had expected. While the government was pursuing a