[Jim Noble]

But to say that private sexual transactions between consenting adults may be criminalized, is to ignore the 9th Amendment and give it no effect whatsoever.

The authors of IX recogized,as you do not, that such "transactions" seldom are truly private.

[WOSG]

"The authors of IX recogized,as you do not, that such "transactions" seldom are truly private."

To put it another way, they understood and believed in the concept of public morality as emanating from private behavior.
And that such public morality could and should be regulated in cases.

That concept has been lost by the libertine-ians.