In the US, I don't think that UBI could work. Why? Because then businesses and companies will raise the price of everything. Real estate, food, etc. And then prices will stay high, no longer to be afforded with the given UBI. That's what will happen.
EDIT: I'm not saying that I'm against UBI or that it doesn't work– I'm saying that capitalist system of the US will find some way to fuck its implementation.