There's no law left.

The constitution has been terminated, as per Frumps statements and actions.

Besides, can't commit a crime if you're defending your country. Straight from the horses ass. He didn't say which country.

According to Trump, the Constitution is just a suggestion anyways.

They couldn't legally secede from Great Britain either

I mean, to secede would eliminate a lot of laws that you previously had to follow, but once seceded, don't apply to you anymore (at least in the eyes of the state).