The Supreme Court ruled part of the federal Defense of Marriage Act unconstitutional. The court also decided not to rule on a case involving California's Proposal 8.
Longtime Illinois advocate Buff Carmichael said Wednesday's victory was more minor in Illinois. But he says it may kick the state house into action.
"We're going to see people saying, 'Okay, the people in Iowa have this, and they have federal rights now, as well as state rights, and it's nobody's decision except the state legislature,'" Carmichael said. "Why don't we have this?"