President Obama is expected to sign a presidential memorandum today to extend benefits to same-sex partners of federal employees, but he will stop short of pledging full health insurance coverage. Obama is making the announcement at a time when he is facing growing anger among gay supporters over his administration’s recent decision to file a legal brief supporting the constitutionality of the Defense of Marriage Act. During the presidential campaign, Obama called for repealing the Defense of Marriage Act as well as the military’s “don’t ask, don’t tell” policy.