Feel free to make your own fantasy laws to your hearts content, but they won't hold up in court. You might for example decide that in YOUR HOUSE (emphasis yours) your kids are minors until they are 29, NO MATTER WHAT (emphasis yours) and that the politicians of your state or anywhere else have no say, but I'm afraid you'd find the reality that smacked you upside your head is markedly different than your fantasy.
An important point to remember regarding tenants are the terms of the lease. An house guest of whatever duration is actually just a tenant. You can make up whatever rules you wish, and without a signed lease, kick them out on the street if they violate those terms.