Demonstrators hold flags and chant in front of the Supreme Court in Washington on the second day of gay marriage cases before the court last March. The Supreme Court's landmark ruling on same-sex marriage has private employers around the country scrambling to make sure their employee benefit plans comply with the law. The impact of the decision is somewhat clear in the 13 states and the District of Columbia where gay marriage is currently legal - same-sex married couples must be treated the same as other spouses under federal laws governing tax, health care, pensions and other federal benefits. (ASSOCIATED PRESS / Jose Luis Magana, File)