1200 miles is just the Texas border to Mexico. If you add the other states, that's almost 2000 miles. Prisons are small areas which are easy to fence compared to what's involved with fencing 2000 miles.
Also, fences can be blown up. Here is an example:
"After masked men blew a series of huge holes in the border fence late last night, thousands of Palestinians streamed through the holes and swarmed the streets of the Egyptian border town of Rafah, clearing local shops of whatever they could manage to buy and carry off: milk, powdered detergent and the occasional motorcycle."
“1200 miles is just the Texas border to Mexico.”
The law that Bush signed called for only 700 miles total. Perry opposed it.
You say fence can be blown up but if that’s the case then they can just sneak through all those boots on the ground unless you propose having millions of troops all along the border. That’s even harder to pull off than a fence.
The real answer is troops. There will be gunfire, already is. Texas rangers and border patrol as well as border sheriffs take it often.
It's gonna take someone serious about securing the border. A fence is a ridiculous idea except in certain urban areas.
We have to militarize this border.