The Supreme Court ruled on June 26, 2015, that same-sex couples have the right to marry in all 50 states with a landmark decision that any law prohibiting same-sex unions is deemed unconstitutional. In a historic 5-4 vote, the Court ruled that states cannot prohibit same-sex couples from marrying and must recognize the legality behind same-sex marriages.
Prior to the ruling, same-sex marriage was legal in 36 states and the District of Columbia. Now, same-sex couples may exercise the fundamental right to marry nationwide. Under the ruling, the same licensing required for a heterosexual marriage will now be obligatory for a marriage between two people of the same sex.
To see the full opinion, read the U.S. Supreme Court ruling on gay marriage.