A Terrorist's Ticket to the U.S.?

Security officials say illicit tunnels and fake visas threaten U.S. borders.

Illicit Tunnels & Forged Visas: A Terrorist's Ticket to the U.S.?

Tunnels
Tunnels
Tunnels
Tunnels
Tunnels
Tunnels
Tunnels
Tunnels
Tunnels
Tunnels
But nothing matches the sophistication of the tunnel pictured to the left.

Running between two warehouses along the U.S.-Mexico border, the tunnel in Otay Mesa extended about 2,400 feet and boasted an entrance 85 feet deep with cement lining. It took almost 19 months to complete from May 2004 to November 2005, according to law enforcement authorities. (Unclassified Government Photo)

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