The U.S. Supreme Court hears oral arguments on the federal Defense of Marriage Act .
The U.S. Supreme Court hears oral arguments regarding Prop. 8, California's ban on same-sex marriage.
The Obama administration endorses a constitutional right to marry for gays and lesbians, urging the Supreme Court to strike down California's voter-passed law barring same-sex marriage as well as laws in at least the seven other states that already provide civil unions.
The Supreme Court announces it will rule for the first time on same-sex marriage by deciding the constitutionality of Proposition 8.
Opponents of same-sex marriage ask the U.S. Supreme Court to overturn a federal appeals court decision that struck down Proposition 8.
The U.S. 9th Circuit Court of Appeals votes not to review a three-judge panel's decision to overturn the voter-approved 2008 state constitutional amendment. The legal battle is now headed to the U.S. Supreme Court, the final chapter in four years of litigation over the constitutionality of Proposition 8's ban on gay marriage.
A federal appeals court strikes down California's ban on same-sex marriage, clearing the way for the U.S. Supreme Court to rule on gay marriage as early as next year.
The California Supreme Court rules that the sponsors of Proposition 8 and other ballot measures are entitled to defend them in court when the state refuses to do so, a ruling likely to spur federal courts to decide the constitutionality of same-sex marriage bans.
The California Supreme Court appears ready to rule that the backers of Proposition 8 and other ballot measures have the right to defend them in court.
The legal battle over Proposition 8 will go before the California Supreme Court on Sept. 6. The justices will then have 90 days to decide whether state law
gives proponents of ballot measures legal standing to defend them in court.
The California Supreme Court decides to rule on whether sponsors of ballot initiatives have legal standing to defend the measures in court.
A panel of federal appeals court judges seeks input from the California Supreme Court on the right of private groups to defend the ban on gay marriage.
A three-judge panel of the U.S. 9th Circuit Court of Appeals decides to put same-sex marriage in California on hold.
A federal judge keeps gay marriages on hold for at least another week.
A federal judge in San Francisco decided that gays and lesbians have a constitutional right to marry, striking down Proposition 8.
Five months after the landmark federal trial over banning same-sex marriage began, U.S. District Judge Vaughn R. Walker presided over closing arguments, prodding attorneys about subjects sexual, fundamental, legal and historical.
A federal judge refuses to dismiss a constitutional challenge to Proposition 8, ruling the voter-approved ban on same-sex marriage raised legal and factual issues that required a trial.
The California Supreme Court upholds Proposition 8's ban on same-sex marriage but also rules that gay couples who wed before the election will continue to be married under state law. The decision virtually ensures another fight at the ballot box over marriage rights for gays.
California voters pass Proposition 8 -- which amends the state Constitution to ban gay marriage -- with about 52% of the vote. A 2000 ballot initiative banning gay marriage, Proposition 22, had passed with 61% of the vote but was later struck down by the state's high court.
More than one million signatures are submitted for a ballot measure that would amend the state Constitution to define marriage as a union "between a man and a woman" and undo the California Supreme Court ruling allowing gay marriages.
The California Supreme Court rules that the state Constitution protects a fundamental "right to marry" that extends equally to same-sex couples. The three dissenting justices argue that it is up to the electorate or the Legislature to decide whether gays should marry.