Justin Sullivan/Getty Images
A same-sex couple hold hands during a sit-in protest when same-sex couples were denied marriage licenses on February 14, 2011 in San Francisco, California.
Tuesday morning, a panel of federal judges is expected to issue a ruling on the constitutionality of Proposition 8, the 2010 California initiative that prohibits same sex marriage in the state.
The challenge to the law has been long and complex. It's not clear that Tuesday's ruling will resolve anything as further legal challenges are sure to come, with an appeal to the Supreme Court.
The 2008 proposition passed by a narrow margin of about 600,000 votes. Eighteen months ago, federal judge Vaughn Walker struck down Prop 8, deeming it unconstitutional. Prop 8 supporters immediately filed an appeal and after various twists and turns, the decision on that appeal will be announced at 10 a.m., according to KPCC's Julie Small.
Joining us to preview today's decision, Dahlia Lithwick, the senior legal editor for Slate.com