The US Supreme Court concluded two days of intense debate on gay marriage after suggesting it could strike down the law that prevents legally married gay couples from receiving a range of federal benefits that go to married people.
The court wrapped up its arguments on Wednesday over the federal Defense of Marriage Act that bans recognition of same-sex marriages in the US, affecting several benefits available to married couples, including survivor benefits and tax breaks.
Justice Anthony Kennedy — often the decisive vote in a divided court — joined the four more liberal justices in raising questions about the provision of the act that is being challenged in the Supreme Court.
The debate in the high court has garnered huge interest as polls show that public opinion in the US has been leaning toward being in favor of gay marriage, though religious conservative still strongly oppose it.
Thousands of people marched outside the Supreme Court building on Tuesday, loudly supporting one side or the other.
Same-sex marriage is legal in nine states and the district of Washington, while 12 others recognize “civil unions” or “domestic partnerships” that grant the same benefits without full rights of marriage. The other states ban gay marriage in their constitutions.
Kennedy said the law appears to intrude on the power of the states that have chosen to recognize same-sex marriages.
Other justices said the law creates what Justice Ruth Bader Ginsburg called “two classes of marriage.”
The federal law affects a range of benefits available to married couples, including tax breaks, survivor benefits and health insurance for spouses of federal employees.
Lower federal courts have struck down the section of the law that defines marriage as being between one man and one woman, and now the justices, in nearly two hours of scheduled argument, were considering whether to follow suit.
In 2011, US President Barack Obama’s administration abandoned its defense of the law, but continues to enforce it.
Obama declared his support for gay marriage during last year’s presidential election campaign.
It still is possible the court could dismiss the case for procedural reasons, though that prospect seemed less likely than it did in Tuesday’s argument over a voter-approved gay marriage ban in California.
The motivation behind the 1996 federal law, passed by large majorities in Congress and signed by then-US president Bill Clinton, was questioned repeatedly by Justice Elena Kagan.
She read from a US House of Representatives report explaining that the reason for the law was “to express moral disapproval of homosexuality.”
The quote produced an audible reaction in the courtroom.
Paul Clement, representing the House Republican leadership in defending the law, said the more relevant question is whether Congress had “any rational basis for the statute.”
He supplied one, the federal government’s interest in treating same-sex couples the same no matter where they live.
Clement said the government does not want military families “to resist transfer from West Point to Fort Sill because they are going to lose their benefits.”
The US Military Academy at West Point is in New York state, where same-sex marriage is legal, and Fort Sill is in Oklahoma, where gay marriages are not legal.
The argument follows Tuesday’s case over California’s ban on same-sex marriage, a case in which the justices indicated they might avoid a major national ruling on whether the US’ gays and lesbians have a right to marry.