miles. 53 miles of virtual fence in arizona, and even that is said to be not working all that well. one problem, the censors have have been known to throw off -- been thrown off by things like tumbleweeds. president bush started the program in 2006 but the reported 90% of illegal immigrants who decide to cross the border succeeding, building a better border security system has long been and still is a political brass ring. listen. >> we must not and we will not surrender our borders to those who wish to exploit our history of compassion and justice. we will make it tougher for illegal aliens to get into our country. >> we're going to create a virtual fence that employs motion detectors and infrared cameras and unmanned aerial vehicles to detect and prevent illegal crossings. what i'm telling you is that we're going to have a border that is smart and secure. >> what we're looking to build is a virtual fence. a 21st century virtual fence. >> we've got to have stronger border surveillance and