The Hopewell people had built mounds throughout the Eastern/Southern part of the U.S. and part of Canada so I don’t believe that there’s one specific state where they are all located in but what I can tell you is that the Great Serpent Mound is located in present day Ohio.
No, it is not illegal. Actually a lot of schools around the world use this as a method of punishment. In some schools there are not even janitors the kids have to clean the school themselves punishment or not.
