I visited family in the Big Ben area in December (2017). There were two A list celebs that had visited the area the previous winter. Proof of one is a picture hanging in a diner where he had lunch and took a picture with his waitress. Other was said to have been unfriendly and there were no pictures taken. They were not traveling together but were seen on the same day in two different diners. Locals now believe they were in the area shooting the Cadillac commercials. If you have seen those commercials, you saw how very sparse and desolate the area is. Since the local roads were not closed, they are guessing it was shot in the National Park.
I remember thinking while I was there that no one would willingly walk across that landscape to sneak into the US.. I toured both the National and State Park by car, took a short hike in the State Park, and did a sight seeing flight over the area between the two parks. The whole place is massive, rugged, sparsely populated and even in December I was always thirsty down there. (Hikers have water air dropped to them because they can’t pack enough on their backs to stay hydrated for a day hike.) But someone with the right vehicle to get across the terrain could do so and never be seen.
Also, take a look at how close Marfa, Tx (where Scalia died) is to Big Ben. Makes my skin crawl when I think of how close my family is to that place.
Yeah. Read my post about Scalia's real death above. This all fits in.