Naively, a $3T program would increase the US budget by around 50% even if you eliminated all existing social security and unemployment benefits.<p>I can&#x27;t see determining a politically acceptable and GDP-neutral progressive tax that finds an average of 50% extra per person as a simple problem, and that&#x27;s even before you start dealing with the backlash from equally unhappy people whose existing welfare or social security program entitlements add up to more than $10k per annum...