Some guys got to talking at the rally today and figured out how to stop the invasion with no one getting hurt.
Mexico only has to send a battalion out to the wear the invader's are while they are taking a rest stop break or holding up for the night. Surround the trucks and van's transporting the people, shoot the tires out to shreds and pop one in the radiators for good measure.
No more transportation…no more caravan…and if they do decide to continue on foot, they'll start dropping like fly's after the first 20 miles.