Rick Pluta

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.

Michigan is now the nation's 24th right-to-work state, where unions cannot automatically collect dues or fees from workers. The governor signed the law just hours after it was approved by the state's legislature in a day marked by protests.

Unions poured millions of dollars into ballot campaigns to guarantee collective bargaining rights in the Michigan Constitution and allow state-paid home care assistants to organize into a union. Both were resoundingly defeated.