"House Armed Services Committee Chairman Duncan Hunter (R-El Cajon) on Thursday called for constructing a high-tech fence along the nation's border from the Pacific to the Gulf of Mexico as part of a sweeping crackdown on illegal immigration.
...Chertoff, who recently approved the long-stalled completion of a 14-mile border fence near San Diego, believes some additional barriers may be needed near urban areas, Knocke said, but doesn't see the point of fencing in desert.
As envisioned by Hunter, two parallel reinforced fences would run along nearly the entire length of the border. He acknowledged that there might be areas in rough terrain, however, where it would not be feasible to build the fences. A 100-yard security zone would extend north from the fences."