![Feds Find ‘Most Sophisticated Tunnel in U.S. History’ at Border with Mexico](https://ticklethewire.com/wp-content/uploads/2020/08/Border-Tunnel-via-ICE.jpg)
Feds Find ‘Most Sophisticated Tunnel in U.S. History’ at Border with Mexico
The discovery shocked federal agents: An unfinished tunnel that ran from San Louis, Ariz., to a Mexican neighborhood featured a ventilation system, electrical wiring, water lines, a rail system and extensive reinforcement.