The Supreme Court is expected to issue rulings on two same-sex marriage cases this month, including one dealing with California's Proposition 8, which makes same-sex marriage unconstitutional in the state. Take a look at the path same-sex marriage has taken in states across the country.
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Hawaii Gov. Neil Abercrombie signed a bill legalizing civil unions in the Aloha State on Feb. 23, 2011. The law went into effect on Jan. 1, 2012.