The Ninth U.S. Circuit Court of Appeals in San Francisco will announce Tuesday whether it will take up a legal challenge to Proposition 8, which amended California's constitution to ban same-sex marriage.
The announcement was expected by 1 p.m. ET.
Prop. 8 has been fiercely contested for almost four years since California voters approved it in November 2008. It declared that "only marriage between a man and a woman is valid or recognized in California."
The state Supreme Court upheld the measure in 2009, but a U.S. district judge overturned it the following year. A three-judge federal appeals panel agreed with that ruling in February.
If the full Ninth Circuit court agrees to hear it, the case could stretch on for many more months; should the court decline, supporters will almost certainly ask the U.S. Supreme Court to hear the case.
More content from msnbc.com and NBC News:
- Sandusky accusers must use real identities at trial, judge rules
- Army policy makes it difficult for soldiers to get service dogs
- Public transit ridership rises sharply, advocacy group reports
- $63.5 million Wisconsin recall is most expensive in state's history
- One dead, 7 hurt in shooting at Toronto mall
- Killer's corpse dragged from car, eaten by bear
- Video: Crews make aggressive push on New Mexico fire