Social programs in the United States in the context of "Social Security (United States)"

The United States has a highly developed diversified market-oriented mixed economy. It is the world's largest economy by nominal GDP and second largest by purchasing power parity (PPP). As of 2025, it has the world's ninth-highest nominal GDP per capita and eleventh-highest GDP per capita by PPP. According to the World Bank, the U.S. accounted for 14.8% of the global aggregate GDP in 2024 in purchasing power parity terms and 26.2% in nominal terms. The U.S. dollar is the currency most used in international transactions and the world's foremost reserve currency, backed by a large U.S. treasuries market, its role as the reference standard for the petrodollar system, and its linked eurodollar. Several countries use it as their official currency and in others it is the de facto currency. Since the end of World War II, the economy has achieved relatively steady growth, low unemployment and inflation, and rapid advances in technology.

The American economy is fueled by high productivity, well-developed transportation infrastructure, and extensive natural resources. Americans have the sixth highest average household and employee income among OECD member states. In 2021, they had the highest median household income among OECD countries, although the country also had one of the world's highest income inequalities among the developed countries. The largest U.S. trading partners are Mexico, Canada, China, Japan, Germany, South Korea, the United Kingdom, Taiwan, India, and Vietnam. The U.S. is the world's largest importer and second-largest exporter. It has free trade agreements with several countries, including Canada and Mexico (through the USMCA), Australia, South Korea, Israel, and several others that are in effect or under negotiation. The U.S. has a highly flexible labor market, where the industry adheres to a hire-and-fire policy, and job security is relatively low. Among OECD nations, the U.S. has a highly efficient social security system; social expenditure stood at roughly 30% of GDP.

The RAND Corporation, doing business as RAND, is an American nonprofit global policy think tank, research institute, and public sector consulting firm. RAND engages in research and development (R&D) in several fields and industries. Since the 1950s, RAND research has helped inform United States policy decisions on a wide variety of issues, including the Cold War space race, the U.S. involvement in the Vietnam War, the U.S.–Soviet nuclear arms confrontation, the creation of the Great Society social welfare programs, and national health care.

RAND originated as "Project RAND" (from the phrase "research and development") in the post-war period immediately after World War II. The U.S. Army Air Forces established Project RAND with the objective of investigating long-range planning of future weapons. The Douglas Aircraft Company was granted a contract to research intercontinental warfare. Project RAND later evolved into RAND, and expanded its research into civilian fields such as education and international affairs. It was the first think tank to be regularly referred to as a "think tank".

The Personal Responsibility and Work Opportunity Reconciliation Act of 1996 (PRWORA) is a United States federal law passed by the 104th United States Congress and signed into law by President Bill Clinton. The bill implemented major changes to U.S. social welfare policy, replacing the Aid to Families with Dependent Children (AFDC) program with the Temporary Assistance for Needy Families (TANF) program.

The law was a cornerstone of the Republican Party's "Contract with America", and also fulfilled Clinton's campaign promise to "end welfare as we know it". AFDC had come under increasing criticism in the 1980s, especially from conservatives who argued that welfare recipients were "trapped in a cycle of poverty". After the 1994 elections, the Republican-controlled Congress passed two major bills designed to reform welfare, but they were vetoed by Clinton. After negotiations between Clinton and Speaker of the House Newt Gingrich, Congress passed PRWORA. Clinton signed the bill into law on August 22, 1996, which was amended by the Noncitizen Benefit Clarification and Other Technical Amendments Act of 1998.