I don't believe any state specifically disallows traps and monsters. They just say how you're allowed to dispose of a body, not all the ways you can't. In other words, it's not an Air Bud situation. Anyway, just a joke, I don't have enough kobolds to populate a dungeon with (yet).
I don't think this is just a joke, it's a gross overstep by liberal governments. We should rally together as conservatives and libertarians to ensure that we get the burial that we deserve - big government has to go.
Most states disallow traps - they're indiscriminate devices that could harm people with legitimate reasons to go on your property, e.g. emergency workers.
If the police can convince a judge that there is probably cause to believe that a crime is being committed on your property and to give them a warrant, that would be a legitimate reason to go to your property.