The US Govt, unlike any other country, has the ability to print unlimited amounts of the world's reference currency. It also has no effective cap on its annual deficit or total debt. In other words, anything that the US Govt chooses to spend money on, it already can, with little oversight and no limits. That's why collecting additional revenue from billionaires, or any other source, has no effect whatsoever on how that govt spends (or "redistributes") money. US Govt's priorities are military, social security (which actually does keep many older people out of poverty), healthcare, and paying interest on its debt. You'll need to change the core priorities (including reducing deficit & debt) before collecting more money actually goes towards the goals you're seeking.