It won't, because the only way UBI can work is to completely redo a countries spending as well as its taxing. A negative income tax/UBI where, say, outreach programs for the homeless are paid for won't work. Maybe even things like public housing. Further afield, even if we can conservatively say it would cost the USA a trillion dollars, that's an amount that seems implausibly high to get through.
I do wonder though if it would be possible to fund with a combination of a sell off of public land plus technology. Theoretically, with a UBI, there would be little to no need for the government to provide subsidized housing, and a technological solution where money could be sent directly to landlords rather than via recipients would provide the sort of risk reduction that many landlords need. That could lead to a boom in sub $1,000 a month rentals, where landlords are guaranteed they will be paid.
Combine with a sell off of some public housing assets, and it might be possible to fund a UBI for several years, not so much to push the can down the line, but to see if the trillion dollars is recouped with economic growth as the entire amount would be spent by all recipients up to and slightly above the median US income, so there should be some positive economic growth.
That's the rub though, this is hard to pass. The left in particular won't like the replacement of programs for direct cash and a public assets sell off is kind of the left's idea of heresy. Conversely, the right won't let it through without MASSIVELY reducing the number of programs that are currently funded. There is virtually no country in the world with a sane and rational enough parliament to be able to perform the sort of radical surgery their budgets need to introduce a UBI.