Caught urinating in public? Had consensual sex at age 17 with your high school sweetheart^? If you got caught doing either one you end up on the same list as the child molesters and rapists. Lucky you.
And the sad thing is I don't see this changing anytime soon as any politician who tries to tackle this will be clobbered by his opponents for being lenient on those evil sex offenders.
^Given sexual trends among teens I'm guessing a ridiculous portion (I'd venture over 80%) of the people in America should be on the sex offenders list.