I think your bordering on tin foil area if you really think the government cares what you do in your personal life that doesn't violate a law.
What about when one breaks laws in the privacy of his or her own home? Ever heard of Bowers v Hardwick?
Remember when Obama was talking about wanting to have a larger budget for civilian force than the military? There was also talk about trying to get utility people, meter readers, cable installers, etc, to monitor behavior of people in the privacy of their own home, and report to the government. (That was in the GW Bush days.)
There are many unjust laws on the books, and some like was the sodomy case of Bowers v Hardwick, are unconstitutional. Regardless if they are just or unjust, the 4th Amendment to the Constitution guards against unreasonable search and seizures and therefore it should make no difference if it is legal or illegal, if it doesn't adversely affect others and is done in private.
It is the same 4th Amendment which protects all people in the USA, not just US citizens. It protects even residents who are here illegally. There being here is an illegal act, yet their rights are protected by the Bill of Rights, and they cannot legally be stopped for suspicion of being here illegally. Such case would quickly be thrown out.
I've stated the same thing about traffic stops where they stop everyone for "license checks," when they are really trying to bust people for drinking and driving.