Like I said before, it's better if they were deported entirely (as was the case with Trump policy), but I think a very good point has been raised because the blue state governors keep pushing for immigration, albeit in red states (they're hoping to conquer those as well), so what people like Abbott are doing are bluntly saying it as is: "no -- you made this mess, you were the ones pushing for it, so you get to own it -- leave us out of this shit"
More info on how it relate to Q here: https://greatawakening.win/p/15JUCiFrN2/x/c/4OdhrdJoz7C . Thank you, u/Duck_N_Cover !
One thing that happens and has been happening is tourists finding work here and overstaying their visas. These folks often owe someone money and become debt slaves like many of our citizens. Can be a nasty trap if they don't have their working papers. Pulls down everyone else.
Thats one smaller facet, overstaying work visa is another. Illegals arrested, then released into the interior on a promisary to show up to court is another big one. Very few show up to these hearings. Thank god for "remain in mexico." Keep the bad ideas on the other side.