A federal judge in Michigan could rule as soon as Thursday on a challenge to the state's ban on same-sex marriage and civil unions. The challenge comes as the U.S. Supreme Court is set to hear two cases dealing with gay marriage later this month. In the Michigan case, a lesbian couple sued not because they want to be married, but because they want to be parents. Jayne Rowse and April DeBoer have been together 13 years. For all practical purposes, they consider themselves married to each other. Rowse says they would like to make it official with a wedding in one of the nine states that allows same-sex marriages.