"The Obama administration threw its support behind a broad claim for marriage equality on Thursday..."

"... and urged the Supreme Court to rule that voters in California were not entitled to ban same-sex marriage in that state."

The latest brief, filed late Thursday, does not, however, ask the court to declare such bans unconstitutional nationwide; instead, it has focused its argument on Proposition 8...

The identified problem exists only in states that offer domestic partnerships, depriving same-sex couples of the dignity of the term "marriage."