I’d be more interested in giving my state detailed info, letting them run programs. The country can have aggregate data.
The history of the VRA suggests that several states simply cannot be trusted to do that for all their residents.
The feds have smart people who find the levers to work to get municipal, county, state and private data via voluntary/“voluntary” disclosure.
That would probably not be constitutional. I don't think the states are unable to run their own census, but the Constitution requires a federal one.
That works great for real states, but some states are just three mining companies in a trenchcoat.