... total household debt increased by $32 billion (0.2%) to $13.54 trillion in the fourth quarter of 2018

Everyone is drowning in debt because people aren't being paid for what they produce. Time to tax the billionaires.
Of course you cannot tax a machine, but you can tax the owner of such machine, or capital: the corporations.
BUT guess what happened to corporate tax in the U.S. in the last decades?
So, no, taxing the billionaires is not the right way to do so.