NEW ORLEANS (AP) — The Louisiana attorney general's office says it's asking the state Supreme Court to overturn a Lafayette Parish judge's ruling that the ban on same-sex marriage is unconstitutional.

Judge Edward Rubin's ruling affects only the district covering Lafayette, Acadia and Vermilion parishes.

State court rulings are not affected by a federal judge's ruling in New Orleans that the law is constitutional. And Judge Martin Feldman's ruling is not binding on federal judges in Louisiana's Middle District, based in Baton Rouge, or Western District, which has courthouses in Shreveport, Lafayette, Alexandria, Lake Charles and Monroe.

Tulane University constitutional law expert Keith Werhan says U.S. Supreme Court action will be more important.

U.S. Supreme Court justices will discuss whether to consider any of five gay-marriage law appeals at a closed-door conference Monday.

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