This chapter focuses on the Social Security Act and the disparate treatment of blacks, Mexicans, and European immigrants in the administration of Social Security, Unemployment Insurance, Aid to Dependent Children, and Old Age Assistance. Though framed as legislation that would help the “average citizen,” scholars have shown that the Social Security Act in fact excluded the vast majority of blacks from the most generous social insurance programs, relegating them to meager, decentralized, and demeaning means-tested programs. European immigrants, by contrast, benefited from many of the provisions of the Social Security Act, and in at least some respects, they benefited more than even native-born whites. The net result of these policies was that blacks were disproportionately shunted into categorical assistance programs with low benefit levels, European immigrants were disproportionately covered under social insurance regardless of citizenship, and Mexicans were often shut out altogether.