Two U.S. legal groups have submitted briefs in a Colombian case seeking marriage equality.

According to gay weekly the Washington Blade, the New York City Bar Association and the Impact Litigation Project at American University Washington College of Law in D.C. filed briefs citing two U.S. Supreme Court cases.

In one of the cases, the Supreme Court struck down as unconstitutional a key provision of the Defense of Marriage Act (DOMA), which prohibited the federal government from recognizing the legal marriages of gay and lesbian couples. The second case opened the door for the marriages of gay couples to resume in California.

Since those decisions were handed down last June, an avalanche of challenges have flooded U.S. federal courts, leaving only 4 state bans unchallenged.

“The evolution of the cases that challenge legislation against marriage in the United States have made the great weight of scientific, legal and historic authority that is in favor of allowing same-sex marriage clear,” wrote Hunter T. Carter of the New York City Bar Association. “The cases also demonstrate that the arguments against marriage between people of the same sex are easy to refute. And they are often based on refuted science, animus or religious beliefs that should not be taken into account in the determination of public policy.”

The briefs were submitted in a case asking Colombia's Constitutional Court to recognize the marriages of two male gay couples.

The men were allowed to marry based on a ruling handed down by the same court in 2011, which said that gay and lesbian couples have the same rights as heterosexual couples and ordered lawmakers to remedy the situation by June of last year. If the lawmakers failed to act, the judges ruled, then “gay couples can go to a notary and with the same solemnity of a heterosexual marriage enter a union similar to one between a heterosexual couple.”

Lawmakers failed to meet the June 20 deadline.

Inspector General Alejandro Ordonez Maldonado moved to nullify the marriages of a handful of couples who exchanged vows after the deadline passed.

The Constitutional Court agree to hear the couples' cases on April 1.