(Elliott Spagat | The Associated Press) This Oct. 26, 2017 file photo shows prototypes of border walls in San Diego. In his demands that Congress set aside $5.7 billion for a border wall, President Donald Trump insists a physical barrier would stop heroin entering the U.S. from Mexico. But U.S. statistics, analysts and testimony at the trial of drug kingpin Joaquin "El Chapo" Guzman in New York show that most hard drugs entering the U.S. from Mexico come through land ports of entry staffed by agents, not open sections of the border.
I have not read or heard about this possible way of breaching the Trump Wall. How easy it would be to take hot air balloon passengers, either singular or in numbers, launched, from remote sites in Mexico, over the 30-foot wall.
Although I am not familiar with the operation of hot air balloons, I would think the movement and operation of the balloons would not be difficult to set up and operate.
Thinking ahead, the use of 24-hour surveillance with drones may help detection.
William W. Louie