There have been a number of experiments with basic income and similar things (I am typing this from a phone, or I would dig up links), but nothing at a national

There have been a number of experiments with basic income and similar things (I am typing this from a phone, or I would dig up links), but nothing at a national scale anywhere. I would guess the Alaska Permanent Fund dividend among the closest things currently running, though of course it's not nearly as high as BI proponents would want.