But a barrier is not the permanent object that some people imagine. Natural events can knock down parts of a border fence. One storm in Texas left a hole for months. Fences and walls can also erode near rivers or beaches, as the one in San Diego did. And they can be penetrated: Some fencing can be cut in minutes, and the Border Patrol reported repairing more than 4,000 holes in one year alone. They neglected to mention whether that number equaled that year’s number of breaches.
Much of the current fencing can be easily mounted with a ladder or from the roof of a truck. In some cases, border crossers can scale the fence without any additional equipment. One viral video from 2010 shows two women easily climbing an 18-foot steel bollard-style pedestrian fence in less than 20 seconds. Smugglers can even drive over the fence using ramps, a fact that was discovered only when a couple of foolish drug entrepreneurs managed to get their SUV stuck on top. (They took the dope and split.)
To put it most simply, border barriers will never stop illegal immigration, because a wall or fence cannot apprehend crossers. The agents that Fox News spoke to called a wall “meaningless” without agents and technology to back it up. Mayor Michael Gomez of Douglas, Arizona, labeled the fence a failure in 2010, saying “they jump right over it.” Former Border Patrol spokesperson Mike Scioli has called the fence little more than “a speed bump in the desert.”Why the Wall Won’t Work – Reason.com