Why is health care reform unconstitutional?

The question isn’t really whether or not Congress called it a tax. It’s whether it’s a regulation. They can call it whatever they like as long as it’s something they actually have the constitutional authority to do.

I agree. It’s the plain meaning of “involuntary servittude” as including conscription – that, I disagree with.

And I shudder to imagine how you might interpret an organization’s by-laws, written in, say, 1910, that required the group’s activities chairman to have a gay disposition.

Words change meaning over time. In The Wife of Baths Tale, Chaucer’s character lists what women want – one of which is that men don’t criticize her for her vices:

Huh? Nothing nice? But that is nice, saying she’s been wise, isn’t it?

Not in Chaucer’s time. “Nice” was the antonym of “wise” – it meant foolish, silly, simple, ignorant.

I hope it’s clear that if you see the word “nice” used by Chaucer and insist its palin meaning is “pleasant” or “agreeable” … well, that would be …er… “nice” of you.

Similarly, the plain meaning of “involuntary servitude” did not include military conscription.

So, yes, I agree the plain meaning controls. But not the plain meaning of the words today, because they meant something slightly different when they were adopted.

In what way is the meaning different today than when the 13th Amendment was passed? Period sources suggest that both words meant pretty much the same thing then as they do now, except that the sense referring to estates has passed out of use except in law.

What period sources are those?

Quoting the Supreme Court in Butler v. Perry, 240 US 328 (1916):

Hence my allusion to “specious reasoning”. Why did the Northwest Ordinance and the 13th Amendment distinguish between “involuntary servitude” and “slavery”, do you think?

Because they are not the same thing.

Salvery refers to the ownership of human beings. “Involuntary servitude” is a broader term encompassing peonage or compulsory labor for the discharge of debts.

That doesn’t mean it extends to things like military service, any more than it extends to jury duty.