<prompt> Translate the following text to EnglishSSA ni shirika la serikali ya Marekani, na ni jukumu la kusimamia programu za Old Age na Survivors Insurance OASI na Disability Insurance DI, pamoja na Programu ya Supplemental Security Income SSI.  <response>: Established in 1994 as an independent agency within the U.S. government, SSA is responsible for administering the Old Age and Survivors Insurance OASI and Disability Insurance DI programs as well as the Supplemental Security Income SSI program. 