irrelevant to the pluralist context of the United States. While atheism underpinned many European unions and stimulated Catholic unionists to form separate labor federations, the religious neutrality of unions in the U.S. provided no such impetus. American Catholics seldom dominated unions, but they exerted influence across organized labor. Catholic union members and leaders played important roles in steering American unions away from socialism. 20th century By 1900, Catholics represented 14 percent of the total U.S. population, soon became the single largest religious denomination in the country. Still, Catholics did not hold many high offices in government. Only one of the first 54 justices on the United States Supreme Court was Catholic, Roger B. Taney, appointed in 1836. From the 1930s to the 1950s Catholics formed a core part of the New Deal Coalition, with overlapping memberships in the church, labor unions, big city machines, and the working class, all of which promoted liberal policy positions in domestic affairs and anti-communism during the Cold War. This New Deal Coalition formed under Franklin Roosevelt was led by his Postmaster General and the nations first Irish American Roman Catholic Cabinet member James Farley. Bishops' Program of Social Reconstruction Following World War I, many hoped that a new commitment to social reform would characterize the ensuing peace. The Council saw an opportunity to use its national voice to shape reform and in April 1918 created a Committee for Reconstruction. John A. Ryan wrote the Bishops' Program of Social Reconstruction. Combining Progressive thought and Catholic theology, Ryan believed that government intervention was the most effective means of affecting positive change for his church as well as working people and the poor. On February 12, 1919, the National Catholic War Council issued the "Bishops' Program of Social Reconstruction". The Program received a mixed reception both within the church and outside it. The National Catholic War Council was a voluntary organization with no canonical status. Its ability to speak authoritatively was therefore questioned. Many bishops threw their support behind the Program, but some, including Bishop William Turner of Buffalo and William Henry O'Connell of Boston, opposed it. O'Connell believed some aspects of the plan smacked too much of socialism. Response outside the church was also divided: labor organizations backed it, for example, and business groups criticized it. Defense of parochial school system After World War I, some states concerned about the influence of immigrants and "foreign" values