Something immigrants would be useful for

Lets say there are 700K people living in Native Reservations.  America attracts like 2 million immigrants/year.

Offer these 2 million immigrants US Citizenship if they move into Native American reservations and vote to eliminate the reservation, integrating it with their respective states.  No human being is illegal (including colonists who settle Native Reservations to claim the land for the US).  The most common counterargument:

What is their culture?  Knowing some native language known by practically nobody where you also know English most of the time?  Yeah; preserving Native Languages is totally useless; the natives should learn behind their inferior language (because pratically nobody knows it compared to English) and learn English like everyone else in the US.  A language is a tool for communication and nothing more.  Your language is not worth preserving.

Watch a bunch of lefties call me racist (even though I litterally want to abolish ICE and repeal Qualified immunity) because I am an expansionist, and I think learning Cherrokee is totally useless to do in this world.

They will complain, but I listen to this guy on this issue:

I like how you turned evil over time.

It's not evil; it's just expansionist.  Evil would be if I wanted to murder the Natives (which I don't want to do).  I just want Native Reservations to not be a thing anymore.

After taking 99% of their land? I guess 99% is just not enough. You want absolute victory.

Yes.  I want 100%.  It's globalization; smaller cultures get assimilated into bigger ones.