They can't. They'll be happy with the damage they do until they're finally busted by the SCOTUS, ten to fifteen years from now. By then, most of the farmers will be toast. To get the rest, they'll tweak the rules just a bit to accomplish the same thing and force the farmers to sue again to stop them. Bureaucrats have plenty of your money with which to wait out their hosts.
Ten to fifteen years from now, my FRiend, the SCOTUS will be comprised of obama appointees. If you believe that they will reverse any of obama’s edicts, you are living in a dream world.