By Steve Neavling
ticklethewire.com
Fences along the Mexico border are expensive to maintain and difficult to police.
Drug traffickers often smashed through the barrier with trucks. Others sneak in when it’s foggy, the San Diego Union-Tribune reports.
About 670 miles of the U.S. border with Mexico has a fence. In California, maintaining a fence cost $9 million a year and requires surveillance cameras, underground sensors, welders and stadium lights.
The debate over the effectiveness of fences has gained traction after Donald Trump said he wanted to build a wall along the entire border.
