Some “smells” don’t go away..even when you remove the source of the smell.
I suggest everyone go check out some of this Pastor’s other videos. I especially found the one about “p...ing on the wall” enlightening.
Some times irrational behavior can lead to an unfortunate climatic end...this “Pastor” needs to grow up...he has four little kids that need “a grown-up” for a father.
The Treaty of Guadalupe-Hidalgo (by which the US acquired the Southwest from Mexico in 1848) permits unfettered travel by citizens of both countries across the border for distance of a few score miles. So, “border” inspections may occur beyond that distance. (IIRC).
It made sense in the days of the Old West; now things are a little different. I don’t know if the treaty has since been amended (with Mexico’s permission?) or not.
You are correct, but they are using the dog to establish probable cause. What if the residual smell is on your money? I would want to know how often the dog falsely alerts.