The presumptive answer: Abortion is protected by a constitutional right of privacy and/or bodily autonomy whereas consumer goods like toilets and lightbulbs — and health insurance! — aren’t, and are therefore subject to whatever regulation the feds can dream up in the name of the common good. Paul’s confusion stems from his quaint notion that there are conceptual limits on congressional/executive power even if those limits aren’t specifically enumerated. (See, e.g., the Ninth and Tenth Amendments.) Hasn’t he heard that the Commerce Clause entitles Congress to do virtually anything it wants, especially if it involves, er, “mental activity”?
You’ll enjoy every minute of this. Exit quotation: “I’m sorry about your toilet.”