He may not be making that claim. I do not know if he is.
But if the Fed built a highway through his property, or on their own property, knowing that the land was used for grazing, are they not responsible for constructing a suitable fence to protect those using the highway?
My guess is this whole thing is more about retribution against Bundy then anything else.
Also; Since the Fed talks out of both sides of their mouth, why can't Bundy do the same?
No. They are responsible for constructing a fence to designate the right of way and to limit access. According to the story they did that. But they aren't responsible for keeping cows or deer or buffalo or whatever off the road. If a rancher allows his cattle to enter that right of way then he's responsible.