...But federal law can succeed in protecting marriage where a constitutional amendment is destined to fail. THE MASSACHUSETTS SUPREME COURT has legalized same-sex marriage for the first time in this country. Most suspect the U.S. Supreme Court will throw a blanket of federal constitutional protection around this precedent. Faced with the judicial deconstruction of marriage, angry conservative spokesmen and panicky lawmakers have rushed to embrace the Federal Marriage Amendment (FMA), a constitutional amendment to ban homosexual unions. These well-intentioned religious and pro-family leaders believe the high court will strike down anything less imposing. But trying to change the Constitution to...