Examples of these assets?
Dang near everything is Taxed or Permitted (if it is Permitted it can be taken with a Law, Regulation or EO)
TT
Land outside of a city for sure. Gold. Silver. Guns. Alcohol. Yeah, they'll tax you on the land, but I consider it an essential. You just have to make it pay for itself if possible.
The best way to protect assents is to insure people don't know you have them.