UBI won't ever be done in America for same reason there will never be Medicare for All: racism.
White people don't want to pay for black people, who have been denigrated, going back to St Ronnie, as cheating Welfare Queens in Cadillacs and (healthy) "young bucks" who refuse to work.
Of course, there are more white people on public assistance, esp in red/slave states, than black people, but they are just collateral damage in the white person's War on Blacks.
The myth of lazy, cheating, worthless blacks has been installed deeply by racist Repugs working on behalf of the wealthy.
Anyway, socialist "For the People" Finnish culture, in fact all of Scandinavia, is fantastically different, superior from the uncivilized brutality, the social/economic Darwinistic Me First and Only "ethic" of oligarchical police-state America.
USA can't even raise the Fed minimum wage for WORKING people. It's even preemptively ILLEGAL in red/slave states for local govt to set a higher minimum wage for workers, never mind a UBI for non-workers.
The lower 80% of America is ed and un able, and 6 months of Repug regs and rules prove the 80% will get more ed.