One thing that may be causing the delay or the requirement for a fence is lobbyists. I spoke with a Tesla Rep a few weeks back and there has been hard lobbying work going on to "protect people from these dangerous charging stations"
we can only speculate who these people may be in West Texas, Nebraska and North Dakota or anywhere else there is a tesla charging Gap.
Its a futile fight but hey, if people cant charge to make a road trip maybe they will have to buy a car from a dealership instead or buy a gas car instead if USA travel is patchy with a Tesla....Tesla must be stalled at all costs! It wont work, but that may be the reason for the fence.
Also, New Mexico area has been a hot bed of political corruption and scandle for hundreds of years...yes, before there was Even a United States.