New York City Mayor Michael Bloomberg and City Council Speaker Christine Quinn are expected to file a legal brief in support of a gay window challenging the constitutionality of the Defense of Marriage Act (DOMA), which bars the federal government from recognizing the legal marriages of gay and lesbian couples.

Edith “Edie” Windsor is the 83-year-old plaintiff who sued after she received an estate bill of more than $360,000 after the death of he wife Thea Spyer. New York District Court Judge Barbara Jones earlier this month ruled in favor of Windsor.

Bloomberg and Quinn announced on Wednesday that they would file a joint amicus brief.

“We believe that DOMA is unconstitutional because it deprives married gay New Yorkers of equal protection of the laws, and we are filing a brief in support to support the case against it,” Bloomberg said in a statement.

“Edie Windsor's case is a tragic reminder of the work that still needs to be done to extend equality to all people,” Quinn said. “As courts across the country continue to strike down DOMA's unconstitutional assault on our civil liberties, I'm proud to join Mayor Bloomberg and the chorus of voices that have called to repeal DOMA once and for all.”

(Related: Edith Windsor thrilled with gay marriage ban DOMA ruling.)