They disagree that having an armed patrol every .3 miles with their own vehicle wouldn't be far better than a fence that has nobody within numerous miles of it in either direction? No, that is not what they disagree with.
They think a fence would help them. So do I. However, at the cost of creating this fence, there are far better options.
Here are some videos for you. Really, watch these videos. See how fvcking easy it is to climb the fences. Now, you want to build $5 billion+ of these fences to supposedly keep illegals and drugs out? Brilliant idea, morons. It takes these guys five seconds to climb up the fence:
Do you see how easy it is to breach the wall? And these are the illegals who WANT to get caught so they can claim asylum. How do you expect to stop those who don't want to get caught and are going to very remote areas to breach this magical fence?
The only way to effectively do that is to have agents there to stop them. If left unmanned, which the overwhelming majority of a 1900 mile long fence would be, it is a free-for-all for illegals crossing over.
Look at the pictures I posted. Do you see how easy it is to simply walk across the border? These videos show that a fence would be simply a matter of 60 seconds to breach. What is the point of a fence?
Please, have a little fvcking common sense.