Robert Ferdinand Wagner I (June 8, 1877 – May 4, 1953) was an American politician. He was a Democratic U.S. Senator from New York from 1927 to 1949. Working closely in the state legislature with fellow New York City Democrat Al Smith, Wagner embraced reform in the 1910s and 1920s, especially to the benefit of their core constituency, the working class. They built a coalition for these reforms that embraced unions, social workers, some businessmen, and numerous middle-class activists and civic reform organizations across the state. As Senator, Wagner was a leader of the New Deal Coalition putting special emphasis on supporting the labor movement. He sponsored three major laws: the National Labor Relations Act of 1935, the Social Security Act of 1935, and the Public Housing Act of 1937. His son, Robert F. Wagner, Jr. was mayor of New York from 1954 through 1965.