SCOTUS may erode decades of wins for LGBT worker rights.

(ILLUSTRATION: BRAULIO AMADO FOR BLOOMBERG BUSINESSWEEK)

For two decades, most of the LGBT movement’s highest-profile victories have come at the U.S. Supreme Court. In 2003 the justices issued a ruling legalizing gay sex that dissenting conservative Justice Antonin Scalia warned would set the stage for nationwide legalized gay marriage…