The Defense of Marriage Act is gone, but what that means for same-sex couples in Illinois isn't clear. Illinois only allows civil unions, not same-sex marriage, so the status of Illinois couples legally married in other states but now living here is cloudy. For Illinois couples in same-sex unions but not married, the federal benefits opened up by the Supreme Court decision won't apply. Advocates say the legislature could provide clarity by overturning the state's ban on same-sex marriage.