Under 200million working age people Seniors already get BI via SS. People with good paying jobs would pay additional tax that cancels out UBI. So only the hal

Under 200million working age people Seniors already get BI via SS. People with good paying jobs would pay additional tax that cancels out UBI. So only the half earning below median would actually take cash out. That's 100M, or $0.5T net expense, a substantial but not order of magnitude tax increase. Even median is above living wage, so you could reasonably cut even further.