Battles over same-sex marriage have been raging in the federal courts for several years. Two could reach the US Supreme Court within a year: one challenging California's ban on gay marriage under Proposition 8, and the other seeking to invalidate the federal Defense of Marriage Act (DOMA). Here are the cases to follow.
With Hawaii and Illinois soon to join the list, that makes 16 states legalizing same-sex marriage. Proposed ballot measures in several more states, plus another federal court case, could accelerate the movement.
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