A federal judge on Thursday said he would wait to see how the U.S. Supreme Court rules in two gay marriage cases before deciding whether Michigan's marriage ban is unconstitutional.

“I think it's worth the wait,” U.S. District Judge Bernard Friedman is quoted as saying by the Detroit Free Press during a hearing held on Thursday. “I don't know what the Supreme Court is going to do.”

At the suggestion of Friedman, April DeBoer and her partner Jayne Rowse of Hazel Park amended their lawsuit seeking to jointly adopt their three foster children to instead challenge the constitutionality of Michigan's 2004 voter-approved amendment limiting marriage to heterosexual unions. Because they aren't married the couple cannot jointly adopt Nolan, 4, Jacob, 3, and Ryanee, 3.

The case shares some similarities with one of the two cases before the Supreme Court. In Hollingsworth v. Perry, two gay couples are challenging the constitutionality of Proposition 8, California's marriage ban approved by voters in 2008.

However, two stark differences exist in the case. About 18,000 gay couples married before passage of Proposition 8, after the California Supreme Court struck down the state's statue excluding gay couples from marriage. And California currently recognizes gay couples with domestic partnerships.

Michigan offers no recognition of the unions of gay couples.

Michigan's attorney general's office has asked the court to dismiss the suit, saying there is no “fundamental right to same-sex marriage.”