The economic downturn of 1937–1938 and the bitter split between the American Federation of Labor (AFL) and Congress of Industrial Organizations (CIO) labor unions led to major Republican gains in Congress in 1938. Conservative Republicans and Democrats in Congress joined in the informal conservative coalition. By 1942–1943, they shut down relief programs such as the WPA and the CCC and blocked major liberal proposals. Nonetheless, Roosevelt turned his attention to the war effort and won reelection in 1940–1944. Furthermore, the Supreme Court declared the NRA and the first version of the Agricultural Adjustment Act (AAA) unconstitutional, but the AAA was rewritten and then upheld. Republican president Dwight D. Eisenhower (1953–1961) left the New Deal largely intact, even expanding it in some areas. In the 1960s, Lyndon B. Johnson's Great Society used the New Deal as inspiration for a dramatic expansion of liberal programs, which Republican Richard Nixon generally retained. However, after 1974 the call for deregulation of the economy gained bipartisan support. The New Deal regulation of banking (Glass–Steagall Act) lasted until it was suspended in the 1990s.