While more than 70 percent of U.S. states now allow same-sex marriage, the waves of change have yet to reach America’s far-flung and socially conservative territories in the Caribbean and Pacific.

Of the five territories, only Puerto Rico has faced a lawsuit seeking the right for gay couples to wed, and a federal judge there — bucking the trend in federal courts on the mainland — rejected the suit. That case is under appeal before the 1st U.S. Circuit Court of Appeals in Boston. MORE