The history of American conservatism has been marked by tensions and competing ideologies. Fiscal conservatives and libertarians favor small government, laissez-faire economy, low income and corporate taxes, limited regulation, and free enterprise. Social conservatives see traditional social values as threatened by secularism; they tend to support mandatory school prayer and oppose abortion and same sex marriage.[20][21][22][23][24] The 21st century has seen an increase in conservative support for the Second Amendment to the United States Constitution.
Neoconservatives want to expand American ideals throughout the world.[25] Paleoconservatives advocate restrictions on immigration, non-interventionist foreign policy, and stand in opposition to multiculturalism.[26] Nationwide most factions, except some libertarians, support a unilateral foreign policy, and a strong military. The conservative movement of the 1950s attempted to bring together these divergent strands, stressing the need for unity to prevent the spread of "godless communism."[27]
William F. Buckley Jr., in the first issue of his magazine National Review in 1955, explained the standards of his magazine and helped make explicit the beliefs of American conservatives:[28]
Among our convictions: It is the job of centralized government (in peacetime) to protect its citizens' lives, liberty and property. All other activities of government tend to diminish freedom and hamper progress. The growth of government (the dominant social feature of this century) must be fought relentlessly. In this great social conflict of the era, we are, without reservations, on the libertarian side. The profound crisis of our era is, in essence, the conflict between the Social Engineers, who seek to adjust mankind to scientific utopias, and the disciples of Truth, who defend the organic moral order. We believe that truth is neither arrived at nor illuminated by monitoring election results, binding though these are for other purposes, but by other means, including a study of human experience. On this point we are, without reservations, on the conservative side.