You could take the Assets of every Millionaire and Billionaire in the United States, cash them out and send that Money to the Treasury and it wouldn’t make a dent in our National Debt. It would be a rounding error at best.
IIRC a few years ago the Left was all about taking the 1%'ers money. I read somewhere that if we took everything they had it would run the US Government for about 80 days, then there would be no more 1%'ers to steal from and the government would still be spending money like a drunken sailor.
According to wiki there are 525 billionaires in the US.
https://en.wikipedia.org/wiki/List_of_U.S._states_by_the_number_of_billionaires