The U.S. Supreme Court on Monday declined to take up a case challenging its landmark decision to legalize gay marriage nationwide.

The US Supreme Court declined to reconsider its 2015 decision legalizing same-sex marriage, turning away an appeal by a former Kentucky county clerk who was ordered to pay $360,000 for defying the rul...

Still, the justices’ consideration of Ms. Davis’s petition had set off alarms among gay Americans, who were already reeling from the Trump administration’s targeting of programs and funding that benef...