There are two worlds - laws and enforcement of laws. Nothing is going to happen over any object, other than human remains, found on the ground on private property. Nobody "owns" any part of the earth but common reality and property rights trump spiritual laws on a day-to-day, living basis. The real issue is how these poachers get their stuff and common sense says they don't go wandering around plowed fields all over the country. Many of them dig and poach off Public lands.I suspect a goodly number of them have ceremonial/grave stuff that they don't dare show in Public - a few maybe even have human bones, that would be my suspicion. They sneak around many of them and are slippery and about impossible to catch.
About a year after that grave fight I mentioned above, some poacher got a guilty conscience and dropped off some bones at night by the Coroner's office in Bowling Green, Ky. He was part Indian, knew the Coroner that had been involved in the first grave fight, so he sent them up to him - he got a grave plot in the city cemetary, a few Indians on hand put togather a ceremony for him and put him/her back to earth. The Anthros were kept out of the loop in this manner, otherwise the old timer's bones would still be sitting in some box in an Antro's closet, like a damn trophy of sorts. Common sense and common decency can prevail at times but catching the poachers is a whole other matter, a tough nut to crack. Far be it for me to incite insurrection but it would be just and fitting most symbolic if some Indian scouts could follow some of these poachers and shoot them in the back with an arrow as they dig and pillage.