Legislation to add a “Gender X” option to driver’s license should have been a straightforward task in the far-left state of Massachusetts, but one Republican lawmaker managed to derail the bill by taking transgender ideology to its furthest extreme. The state Senate voted in June to approve the measure, which would have also extended the option to learner’s permits and state identification cards. No documentation would have been required to prove an applicant is neither male nor female. “It’s a milestone,” bill sponsor Sen. Karen Spilka, a Democrat, said at the time. Despite the state House of Representatives being just...