[neverdem]

But this idea might be worth considering if, and only if, the legalized non-citizens were not allowed to ever sponsor relatives for family-based immigration. That way at least the threads of chain migration wouldn’t be greatly expanded.

"Finally, legal permanent residents cannot obtain U.S. visas for immediate family members outside of established quotas."

[Aetius]

Yes, thanks for point that out. If ‘established quotas’ weren’t increased, then again it might be worth considering. But in the fantasy where Democrats would go along with something like this, I envision the quotas for family-based immigration being greatly increased.