Judge Bernard Friedman heard arguments Thursday. He said it's better to wait for the Supreme Court because any opinion from the nation's highest court in a California case could affect the Michigan case.
Two Detroit-area nurses are asking Friedman to strike down a 2004 constitutional amendment that says Michigan only allows marriage between a man and a woman.
Jayne Rowse and April DeBoer said the amendment and a Michigan law that bars them from jointly adopting children violate the U.S. Constitution's Equal Protection clause.
The judge said the Hazel Park couple presents a "compelling" case, but the state also has strong arguments.