WASHINGTON (AP) – The Supreme Court says it will decide whether same-sex couples nationwide have a right to marry under the Constitution.

The justices said Friday they will review an appellate ruling that upheld bans on same-sex unions in four states.

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

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Kentucky, Michigan, Ohio and Tennessee are among the 14 states where gay and lesbian couples are not allowed to marry.

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The number of states that permit same-sex marriage has nearly doubled in three months as a result of federal and state court rulings. The justices’ decision to turn away same-sex marriage appeals in October allowed some of those rulings to take effect. Florida last week became the 36th state to issue marriage licenses to same-sex couples.