@marcstevens is my tax professional, and [he says make them prove that the existence of the law is proof that the law applies](http://marcstevens.net).

They can't do that without resorting to a [logical fallacy](http://yourlogicalfallacyis.com), but good luck arguing that yourself in court, you havta practice well in advance to pull it off.
I have first hand personal knowledge of the [efficacy of his method](http://marcstevens.net/successes).
I have personally argued this method in court, myself, and walked out with no time or fines.

For everybody else, do what Randy has said, he has a level head,...