WASHINGTON — Groups from around the country — up to and including the Obama administration, according to one report — are weighing in Thursday in support of California same-sex couples' rights to marry, with Supreme Court filings in the challenge to the state's marriage amendment.
NBC's Pete Williams also has reported Thursday afternoon that the Obama administration will weigh in on the Proposition 8 case, a decision both Obama and Attorney General Eric Holder had not been willing to announce in recent interviews.
Specifics — including the breadth of the administration's argument — remain unknown, although a brief should be filed later Thursday.
[UPDATE: READ BUZZFEED'S FULL REPORT HERE.]
Williams followed up with a brief report as well.
The libertarian Cato Institute is pairing up with the left-leaning Constitutional Accountability Center to urge the Supreme Court to strike down both California's Proposition 8 ban on marriage between same-sex couples and the Defense of Marriage Act's federal ban on recognizing same-sex couples' marriages.
The American Sociological Association also weighed in with its own brief, urging the court to strike down DOMA and Proposition 8. The sociological group focused its briefing to the court on opposing the arguments made by supporters of Proposition 8 and DOMA that children fare better with opposite-sex parents.
"The results of our review are clear," said ASA President Cecilia Ridgeway. "There is no evidence that children with parents in stable same-sex or opposite-sex relationships differ in terms of well-being. Indeed, the greater stability offered by marriage for same-sex as well as opposite-sex parents may be an asset for child well-being."
The Cato-CAC brief in the Proposition 8 case is being filed Thursday, while the groups' separate brief in the DOMA case is yet to be filed.
In addition, California's Attorney General, Kamala Harris, filed a brief on behalf of the state arguing that Proposition 8 should be held unconstitutional — and that the proponents of the initiative do not have the authority, or standing, to bring the case.
Several other states — including a few that don't allow same-sex couples to marry — penned a second brief echoing California's argument about the amendment, urging the court to find Proposition 8 unconstitutional. Massachusetts Attorney General Martha Coakley led the effort on behalf of her state and was joined by the attorneys general of Connecticut, the District of Columbia, Iowa, Maine, Maryland, New Hampshire, New York, Vermont and Washington — all states that allow same-sex couples to marry — and the attorneys general of Delaware, Illinois, New Mexico and Oregon joined the brief, despite their states not allowing same-sex couples to marry.
The expected brief led by Ken Mehlman on behalf of Republicans supporting a constitutional right to marriage equality was filed Thursday as well.
[NOTE: This article is being updated throughout the day as new briefs are filed.]