On May 15, 2008, the California Supreme Court legalized same-sex marriages.  The ruling took effect on June 17, 2008.   On June 6th, the Social Security Administration issued EM-08061, an Emergency Message telling the 61,000 member staff to "wait for instructions" before answering any questions about the effect of the ruling on certain Social Security benefits

It won’t come up often, but will certainly help in certain situations.  The general rule is that eligibility for SSI disability payments, and SSI-related Medicaid, for minor children depends on the income and assets of the parents, which are "deemed" to be available to the child.  "Parents" include "step-parents."  But only the income and assets