I actually talked to some agents there one day. They were quick to tell you how some landowners near the border obstruct them in any way they can. One example was that Agents can go without warrant onto property adjacent to the border, but they do not have a right to use roads.
Some Landowners paid off by the dopers build iron pipe gates and force the USBP to walk several miles down a dirt road to patrol.
It’s naive to think the cartels have corrupted an entire nation in mexico, but that magically, everyone just this side of the fence is pure as the driven snow. These are the people who fight the USBP, and of course, people who have a last name ending in “Z”.
Good info there. Traitors to America