Currently in the US, the right to marry offers one access to a variety of monetary and non-monetary benefits, including higher levels of earnings and household wealth, social security benefits, tax relief, and social insurance of various kinds. Those without such rights are necessarily barred from the economic benefits offered by the legally enforceable marriage contract. This paper reviews state-of-art social science literature on the economic returns to marriage, outlining the significant economic benefits currently available only to those able to legally marry. The paper considers three general categories of marriage-related economic benefits: earnings premiums, wealth and property accumulation, and insurance against risk over the life course. Overall, married people earn more, save more, own more, and are better shielded from economic risks, including poverty, than are non-married individuals. Given the range of benefits and protections exclusively available to married individuals, the paper concludes that those without access to legally-enforceable marriage contracts face significant economic disadvantage. Denial of marriage rights, therefore, not only represents denial of basic civil liberties, but federal and state-sponsored enforcement of economic discrimination as well. ..PAT.-Unpublished Manuscript [ABSTRACT FROM AUTHOR]