To get to Tommy Fisher’s private border wall in Texas, I drive south from the city of McAllen, then west on Military Road, past a chunk of redundant, abandoned federal border wall, and from there onto a dirt path through a sugar cane farm down to the Rio Grande. When I arrive, Fisher is waiting, wearing a Western-style plaid shirt, wraparound sunglasses, and a mesh baseball cap featuring his company’s logo. He’s 51 years old, with an ursine build and a disarmingly gentle voice.