Only if.... enough of their citizens return home (for fear of deportment?), thus saving the US the cost of their support. Haven't seen the stats on that yet. So I doubt it. (yeah, I know it was sarc)
And how about all of the drugs that come through?
And how about all of the human trafficking stopped?
Would that save money? It's a hard problem to solve but I don't think people should be so gleeful that he has not done it in less than two years.
Some stats, I don't know how accurate they are, say fentanyl or heroin overdoses kill over a hundred people a day in this country. It doesn't all come from Mexico but some does.