The National Security League (NSL) was an American patriotic, nationalistic, nonprofit, nonpartisan organization that supported a greatly-expanded military based upon universal service, the naturalization and Americanization of immigrants, Americanism, meritocracy, and government regulation of the economy to enhance national preparedness.
Many of the programs advocated by the NSL, such as a unified national defense agency, an interstate highway system, universal conscription, English as the official language, and a unified national budget, were highly influential. Although the organization had declined before it finally folded in 1942, many of its ideas would become national policy in the United States.[1]