Not having a Federal Marriage Amendment leaves rogue state citizens at the states mercy, and mercy they will not get. When families are broken down, so is society and the country. Government has a vested interest in preventing that from happening. It also has a vested interest in seeing to it that each state remains a Representative Government, as the Constitution dictates. When States or courts determine these issues, the public is not represented, thus such action is unconstitutional. That is when the Fed. govt should step in and tell that state there actions are unconstitutional.