Special agents with Homeland Security Investigations (HSI) have uncovered an incomplete drug smuggling tunnel stretching from Arizona to Mexico, reported AZ Family. Agents are calling the tunnel “the most sophisticated [drug] tunnel in U.S. history” after finding a rail cart system, ventilation ducts, electrical wiring, and water lines, along with extensive wall reinforcements. .@DHSgov along with @CBPArizona ‘s #Yuma Sector are investigating … Continue reading Feds Uncover “Most Sophisticated Tunnel In US History” Along Southern Border