U.S. District Court Judge Bernard Friedman is expected to hand down a ruling, as early as Wednesday, on whether Michigan's gay marriage ban violates the U.S. Constitution.

April DeBoer, 42, and her parter Jayne Rowse, 48, of Hazel Park filed a challenge to the state's law limiting joint adoptions to married couples. The women are seeking to adopt their three foster children – Nolan, 4, Jacob, 3, and Ryanne, 3 – but cannot do so because of the state's 2004 voter-approved constitutional amendment limiting marriage to heterosexual couples.

At the suggestion of Friedman, the women amended their lawsuit to also challenge the state's marriage ban.

In March, Friedman said that he would wait to see how the Supreme Court ruled in two cases related to same-sex marriage before deciding whether to grant the state's request to dismiss the lawsuit.

Friedman noted the high court's opinions in ruling that the case could proceed: “That is exactly the type of harm plaintiffs seek to remedy in this case.”

Michigan State Attorney General Bill Schuette is defending the state's law.

“The United States Supreme Court has ruled that states retain the constitutional authority to define marriage,” Joy Yearout, a spokeswoman for Schuette, told The Detroit Free Press. “We will continue to defend the Michigan Constitution in this case.”

Friedman could hand down his ruling from the bench on Wednesday. Schuette's office would likely respond to an order overturning the marriage ban with a request for a stay while the state files an appeal. If Friedman declines the request, gay couples would be allowed to marry while the case proceeds.