Supplemental Security Income (SSI)

http://www.ssa.gov/pubs/11000.html#part1

The Federal Social Security Administration administers the Supplemental Security Income (SSI) Program, under which persons age 65 years and older, or those who are blind or disabled (including children), receive maintenance payments from that agency and supportive services through the county welfare agencies. For eligible individuals, a state supplement is provided in order to increase the net countable income up to the state standard for the respective living arrangement.