Real Estate Law
Have Real Estate Law Questions? Ask a Real Estate Lawyer.
Welcome and thank you for your question. I will be the professional that will be assisting you.
If the proper procedures are followed to change/amend rules new rules can be put into place. That being said the document you agreed to should be honored as the agreement was made prior to any rule changes.
"A grassland easement is a legal agreement signed with the United States of America, through the U.S. Fish and Wildlife Service" http://gfp.sd.gov/pheasantsummit/docs/FWS%20Habitat%20Programs%20Summary.pdf
The agreement you signed is a contract that needs to be honored. You basically be grandfathered in so any changes to rules would not impact you.