How is a technology based solution alone superior. So you have cameras and sensors, people are still moving and getting over the border. They do it everyday right now even with drones and whatnot. Even with all the tech approved ten years ago, they are POURING in. Obama's border boss and Trump's border boss both say a barrier is necessary.
For some parts of the border and in fact most parts of the border a technology based solution is superior. Its not just cameras and sensors. its cameras, sensors and drones plus.
In the first place, the Federal Government is not a bottomless pit of money. If Donald wanted more money for departments to fool around with he should not have taken the nominal Corp tax rate all the way down to a nominal 21% from 35%. Taking it to 26% would have given us everything we could have gotten out of a corporate tax break and the difference would have fed another $600B into the treasury. Frankly, I wanted that $600B put with the ridiculously small $200B Trump had committed to Infrastructure as $800B would at least have been a decent match to state and local contributions to Infrastructure improvements. But even if not used for Infrastructure at least the cupboard would not be bare. Every dept in Government with the exception of Defense is on an austerity budget. The entire CBP budget for FY18 is $16B. That is up from the sequestration years caused by the GOP's intransigence and unwillingness to work with Obama on ANYTHING including simply passing a budget for the last three years of his term. But while the GOP does not like to talk about it, sequestration was a killer for all agencies of the government.
A Wall is an inefficient, ineffective waste of money we don't have. CBP does not want ANY, repeat ANY solid construction wall anywhere because they can't see through it. That automatically makes the cost of each foot of physical barrier 3x what it would have been for the sorts of wall heights Donald has been tossing around.
We need more technology at ports of entry because over 90% of all the illegal drugs comes through ports of entry, not across the border. We have 328 ports of entry. That bill will likely require upwards of $12B over 10 years just for the 74 Ports of Entry that CBP thinks are at most risk for drug smuggling. Doubling that gets to you about 200 of the 328 POE's.
Then we need a major upgrade for the Coast Guard which at present can only act on 25% of the actionable drug intelligence they have. They need more of just about everything to make their efforts truly meaningful. So you are going to rob money needed for POE Technology and the CG for a Wall that only has a chance of seeing less than 10% of drug traffic and will only actually stop a fraction of that.
As for the Southern border itself and aliens crossing, physical barrier works best in Southwestern urban areas where CBP can quickly get to aliens crossing which is why we have it where we have it now. The argument for physical barrier based on how it functions as part of an integrated system now is a specious argument. It works where it works now because it was placed where it would work best! Do we really think that DHS just plunked it down randomly?
Across much of the Southern border CBP just can't get there fast enough to make a physical barrier practical. It just does not slow those crossing down enough. We are far better off being able to track them from the point they enter to the point where CBP can get to them. The point CBP gets to them just needs to be ahead of them getting to a large enough urban center to disappear into it. Thats it. It resolves both the interdiction and the humanitarian problem of aliens dying in the desert at the same time.
On top of that, as soon as aliens start sawing holes in new barrier, you barrier fans are going to raise holy hell because CBP is not closing the holes fast enough!
There is another 114 miles of physical barrier that can be built and is likely to be built from existing authorized physical barrier designs, probably Bollard which will take us up to about 750 miles of some combination of vehicle and pedestrian barrier.
Add to those issues the issues and cost of using eminent domain to take property and leaving acres and acres of no mans land between the actual border and the physical barrier in suburban areas. I am sorry to say that it is just a bad idea that I do not even think Donald believes in. Donald does not want a Wall. Donald wants a Wall Fight.