You might have thought the demented Americans with Disabilities Act — a bonanza for lawyers that requires any public facility to be designed with handicappers in mind or be sued out of existence — would be the last word in otherly-abled totalitarianism. Not so. Visitability is a concept that makes the ADA downright libertarian by comparison. The initial objective of Visitability proponents is to impose on every home a zero-step entrance, interior doors at least 32" wide, and at least one wheelchair-accessible bathroom on the ground floor. Once they've managed to have this mandated, we'll see where they go from...