What precedents and arguments may shape the court as it hears two landmark cases on whether same-sex couples have a constitutional right to marry.
Jim Mone/Patrick Semansky/AP
It has been 10 years since the US Supreme Court last issued a landmark ruling expanding gay rights in America.
It came in a 2003 case called Lawrence v. Texas. In striking down a Texas anti-sodomy law, the high court declared that intimate sexual conduct between consenting adults was off limits to government regulation.
The author of that decision, Justice Anthony Kennedy, was well aware that he'd just delivered an extraordinary victory to gay rights advocates. Nonetheless, he included an unusual disclaimer near the conclusion of his opinion.
Justice Kennedy said the court's decision that day would have no wider application in the looming showdown over same-sex marriage.
"Do not believe it," conservative Justice Antonin Scalia roared in dissent.
"Today's opinion dismantles the structure of constitutional law that has permitted a distinction to be made between heterosexual and homosexual unions, insofar as formal recognition in marriage is concerned," he wrote.
Now, a decade later, the nation is about to find out who was right – Kennedy in his limiting disclaimer or Justice Scalia in his dire warning.
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