Instead of building more cages, we should build low cost houses in these wasteland states like Montana and North Dakota and give each immigrant family a home. No more room my ass.
There's plenty of room! Plenty of towels! Plenty of... everything!
There's plenty of room even in metro areas. People do need jobs. Restrictive immigration is stupid as hell. You want to grow GDP let people in.
Make legal entry super easy. Work visas, super easy.
Of course screen for dangerous shit. But the easiest solution to reducing illegal traffic that is largely harmless is to make it easy. The vast majority of people crossing illegally are harmless, in fact, beneficial to this country.
Make it so easy that anyone without violent behavior, etc, to legally come in. You make it this restrictive people are reduced to only asylum claims that take forever to process. Of course the natural alternative is to try to cross illegally.
Make it so people who don't have anything to hide can get a work visa no problem. Intensively restrictive immigration is what's creating the problem.
This in turn will make illegal crossings much easier to manage. Make it so the only people trying to cross illegally very likely are trying to do bad things.