The High-Tech Wall that the Democrats are proposing is analogous to a home burgler alarm. It’s only effective when its turned on and there’s a fast, armed response to an intrusion. There is still the problem of “Catch & Release” or the lengthy process of deportation with all of its attendent problems. And, yes, the next Democrat administration would immediately cut funds for a sensor-barrier thus unplugging the entire initiative.
That is exactly the problem. Any border security needs the elimination of catch and release and the elimination of lengthy deportation processes to be effective. A physical wall needs that also.
The support of congress and the executive branch to enforce immigration law is key.