couples expanded steadily from that time until, in late 2014, lawsuits had been brought in every state that still denied marriage licenses to same-sex couples. By late 2014, same-sex marriage had become legal in states that contained more than 70% of the United States population. In some jurisdictions, legalization came through the action of state courts or the enactment of state legislation. More frequently, it came as the result of the decisions of federal courts. On November 6, 2012, Maine, Maryland, and Washington became the first states to legalize same-sex marriage through popular vote. Same-sex marriage had been legalized in the District of Columbia and 21 Native American tribal nations as well. The June 2013 decision of the U.S. Supreme Court in United States v. Windsor striking down the law barring federal recognition of same-sex marriage gave significant impetus to the progress of lawsuits that challenged state bans on same-sex marriage in federal court. Since that decision, with only a few exceptions, U.S. District Courts and Courts of Appeals have found state bans on same-sex marriage unconstitutional, as have several state courts. The exceptions have been a state court in Tennessee, U.S. district courts in Louisiana and Puerto Rico, and the U.S. Court of Appeals for the Sixth Circuit. The U.S. Supreme Court agreed to hear appeals from that circuit's decision. On June 26, 2015, the U.S. Supreme Court struck down all state bans on same-sex marriage, legalized it in all fifty states, and required states to honor out-of-state same-sex marriage licenses in the case Obergefell v. Hodges. Legal issues The legal issues surrounding same-sex marriage in the United States are determined by the nation's federal system of government, in which the status of a person, including marital status, is determined in large measure by the individual states. Prior to 1996, the federal government did not define marriage; any marriage recognized by a state was recognized, even if that marriage was not recognized by one or more states, as was the case until 1967 with interracial marriage, which some states banned by statute. Prior to 2004, same-sex marriage was not performed or recognized in any U.S. jurisdiction, but subsequently began to be performed and recognized by law in different jurisdictions through legislation, court rulings, tribal council rulings, and popular referendums. The Supreme Court's ruling in Obergefell v. Hodges ended all inter-state legal complications surrounding same-sex marriage, as it orders states