Updated at 5:04 p.m. ET

The U.S. Supreme Court will decide on gay marriage this term.

The justices said today they will review an appellate court’s decision to uphold the ban on same-sex marriage in Ohio, Tennessee, Michigan and Kentucky. The four states are among 14 that ban same-sex marriage.

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NPR’s legal affairs correspondent, Nina Totenberg, tells our Newscast unit that in all four states, district court judges struck down the ban, but their decisions were reversed by a panel of the 6th Circuit Court of Appeals based in Ohio. She adds:

"The court said it would hear arguments for 2 1/2 hours in April on two questions: first, whether the constitutional guarantee to equal protection of the law renders invalid state bans on same-sex marriage. And, second, whether states are required to recognize the marriage of a same-sex couple who marry legally in another state."

The case will be argued in April; a decision is expected by late June.

Lyle Denniston of SCOTUSblog notes: “The Court fashioned the specific questions it is prepared to answer, but they closely tracked the two core constitutional issues that have led to a lengthy string of lower-court rulings striking down state bans.”

U.S. Attorney General Eric Holder, in a statement, said the Justice Department will file a “friend of the court” brief in “these cases that will urge the Supreme Court to make marriage equality a reality for all Americans.”

The case from Michigan involves couple April DeBoer and Jayne Rowse.

“We are now that much closer to being fully recognized as a family, and we are thrilled,” DeBoer said in a statement. “This opportunity for our case to be heard by the Supreme Court gives us and families like ours so much reason to be hopeful.”

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Tony Perkins, president of the Family Research Council, which opposes gay marriage, in a statement called the Supreme Court’s decision, a “long-overdue ruling to restore the freedom of the people to uphold marriage in their state laws as the union of a man and a woman.”

Chad Griffin, president of the Human Rights Campaign, which supports same-sex marriage, said: “Marriage has returned to the U.S. Supreme Court faster than virtually any other issue in American history, and there’s a simple reason for that--committed and loving gay and lesbian couples, their children, and the fair-minded American people refuse to wait a single day longer.”

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