Your idea is a good one. And a simple one, at that. Surprising that the Patrol officer and his wife haven't done just that. Assuming, that is, that it matters to them. Sounds like maybe it doesn't.
They DID film them. And Fox filmed them as well. They put it on TV. I saw it for myself. What is that light the Army uses for night time? It's all green.
But Fox and this couple DID film the immigrants flooding over the border.
I'm thinking the same thing. When Kerry's Ohio visits were overattended by the local media, I planned to bring my digital in to work and take some pictures of his tiny little gathering (and huge three buses, by the way) to prove otherwise. I was working on the 30th Floor at the time.
I'm not there any more, but it doesn't take a genius to figure out how to use the new technology to prove a point. Photography is powerful communication.