Because then you might as well open the Borders and say “come on down” and the American Environment simply won’t support that extra pressure.
We already had a limited Amnesty a decade+ ago. If we are going to have one every decade or so, why bother with Immigration policies at all?
And remember, every immigrant made “legal” means his entire family can now come here. So, if we say yes to say, 20 million currently here(that’s one reasonable estimate), that means we have just said yes to a total another 60 million or so. That adds 20% to our population: that’s 20% more pollution, 20% less housing, 20% less jobs, 20% more trash, 20% more traffic, etc. Sorry, that’s a dealbreaker for me.
Amnesty generally means they all get Green cards. Citizenship comes later.
There’s no simple solution.
I have a few: step up enforcement, especially against employers. Allow a generous “guest worker” policy, where certain businesses (like Agriculture) can employ a set number of aliens and offer then temp worker permits, for maybe 6 months. This way, the businesses that really need “migrant farm workers” can get them. Guest workers do not get to bring family with them, and can only stay for a season or so. We could add they get electronic implants for tracking. Yeah, liberals would scream. But since it’d be entirely voluntary (if you want the permit, you get the implant, no implant, no permit).
I’d set stricter limits on cash being sent to Mexico, etc, with the data being available to ICE/INS for searching for “illegals”.
I’d make the border stronger- that’d prevent a lot of drugs coming here, too.
Finally, I’d have a very limited amnesty: as of now- allow illegals that have been here for ten years with a clean record and ten complete years of filing taxes to get a green card. The cost would be set to what the average “illegal” sends home in a year, say $10,000 or so. As a WAG, that would allow 2 mil more residents, with maybe another 2 mil family. (If they have been here for ten years, most of them have already brought their wife and kids, at least).
Hardly perfect, I know.
Note that I know we have a number of illegals here from other nations besides Mexico.