BISMARCK, N.D. (AP) — Farmers in the state that leads the nation in the production of a dozen crops want a right to farm enshrined in the state constitution.The North Dakota Farm Bureau is gathering support for a proposed constitutional amendment that would restrict regulation of farming and ranching in the state. If the group gets enough signatures on petitions, voters will decide the matter next year.State Farm Bureau President Eric Aasmundstad (AHS'-mund-stad) says the goal is to protect the future of North Dakota's agriculture industry before animal welfare groups push through unreasonable regulations.But some officials say the proposal might actually hurt farmers by taking away their ability to protect their own property against everything from a neighbor's livestock odor to the unwanted spread of biotech crops.