Social Security Amendments (P.L. 92-603)
1. Supplemental Security Income (SSI) program established; replaced federal-state programs of Old-Age Assistance, Aid to the Blind, and Aid to the Permanently and Totally Disabled. The first SSI payments were made in 1974.
Deficit Reduction Act (P.L. 98-369)
1. Raised the limit on countable resources by $100 a year for individuals and $150 a year for couples, beginning in calendar year 1985 through 1989. The limits would become $2,000 for an individual and $3,000 for a couple in 1989 and thereafter.
Personal Responsibility and Work Opportunity Reconciliation Act (P.L. 104-193)
1. Tightened eligibility standards for children, who now had to have a medically determinable impairment that resulted in marked and severe functional limitations.
2. Restricted eligibility for noncitizens, generally prohibiting SSI payments until an immigrant became a U.S. citizen. Exceptions were granted for the first five years an individual was in the United States as a legal refugee, asylee, or someone whose deportation was withheld. Additional exceptions were made for certain active-duty military and veterans, their spouses, and their minor children; and for lawful permanent residents who earned, or could be credited with, 40 qualifying quarters of earnings.
A full legislative history of SSI is available here.