I think it a combo of things,I am in the Philly area and drug od's are the number 1 killer of ppl under 60 now(think the whole state too?) There is a ton of pressure for him to stop the drug "Crisis" . 90%+ of the illegal drugs come into the usa vs being manufactured here and almost all the fentenyel (spelling?) A wall will help with that, whether it helps 1% or 100% it will help.
The second part is the illegal immigrants themselves, there are a reported 20-40 million of them here and they cost the us taxpayer big time. I read upwards of 70k per yr per person.Many of them are unvaccinated and disease once thought beat are on the rise again. These are however ppl and I feel for them, both GOP and Dems have not done much to make them legit citz,etc.
The Gov spends 7 million $ per second, the cost of the wall is roughly 12.5 hrs of what we spend a day.
I personally feel it would work somewhat, if it doesnt, see the above meme
the dems would have a win/win situ if it does not.