In 1937, the Congress of Industrial Organizations formed a new union for U.S. government employees, the United Federal Workers of America, from local unions which had disaffiliated from the American Federation of Labor-affiliated American Federation of Government Employees. The UFWA's membership, however, remained static. Much of the UFWA leadership was leftist. The leadership was militant in its advocacy of the rights of its members, and most of the national and local union leadership advocated leftist ideals; associated with left-wing intellectuals, activists, and political people; and supported left-wing organizations. This led many politicians and others to believe the organization was Communist-controlled. The political leanings of the UWFA led to passage of two pieces of legislation intended to restrict its political activities. In June 1938, Congress passed a rider to appropriations legislation that prevented the federal government from making payments to any person or organization which advocated the overthrow of the federal government. In 1939, Congress passed the Hatch Act of 1939, which restricted political campaign activities by federal employees. A provision of the Hatch Act made it illegal for the federal government to employ anyone who advocated the overthrow of the federal government. The UFWA hired lawyer Lee Pressman to challenge the constitutionality of the Hatch Act. On April 25, 1946, the State, County, and Municipal Workers of America merged with the UFWA to form the United Public Workers of America. The impetus for the merger was the relative failure of the UFWA to attract new members, and SCMWA essentially absorbed the smaller federal union. The union's long-standing lawsuit against the Hatch Act of 1939 finally reached the Supreme Court in 1947. In United Public Workers v. Mitchell, 330 U.S. 75, the Supreme Court of the United States upheld the Act. Writing for the majority, Associate JusticeStanley Forman Reed argued that the Hatch Act did not infringe on the First Amendment guarantees of free speech and free association but rather on rights guaranteed by the Ninth Amendment and Tenth Amendment. These rights were not absolute, and could be subordinated to the "elemental need for order" without which all rights ceased to function. Additionally, the non-enumerated rights of the Ninth and Tenth Amendments were subordinate to the enumerated rights granted to the federal government by the Constitution. Reed upheld the Hatch Act as a legitimate exercise of the enumerated rights of the federal government. The decision in United Public Workers v. Mitchell relied heavily on the "doctrine of privilege," a legal doctrine that held that public employment was a privilege and subsequently significant restrictions could be placed on public employees that could not be constitutionally tolerated in the private sector. United Public Workers v. Mitchell proved to be the last gasp of the doctrine of privilege. The Supreme Court explicitly rejected the doctrine in Wieman v. Updegraff, 344 U.S. 183. A broad number of high court decisions in areas such as nonpartisan speech, due process, search and seizure, the right to marry, the right to bear children, equal protection, education, and receipt of public benefits over the next two decades continued to undermine the doctrine. Although the Supreme Court later reaffirmed Mitchell in 1973 in Civil Service Comm'n v. Letter Carriers, 413 U.S. 548, it did so on the grounds that permitting public employees to engage in political activity was dangerous.