Sounds to me like they weren't willing to really commit to the idea of basic income. For a country the size of America, you can't have any meaningful basic income just by taxing a few specific activities. If you really believe in the idea, you have to go whole-hog and fund it with taxes on the top 1%, 10% and 25%.

There are numerous policies which we've pursued in the past few decades which have paid enormous dividends for the top 1% and 10%, policies such as free trade, immigration and the transition away from manufacturing and towards specialized services. These policies have certainly boosted aggregate GDP and average incomes, but most of the benefits have not trickled down to the median/lower-middle-class Americans.

Unless we take more forceful action soon, reactionary populists like Trump are only going to keep getting more power, and before long, we're going to see a clampdown on free-trade, immigration and technological innovation. We desperately need a program like basic income, that taxes the winners in the economy and provides for those being left behind, so that everyone has a reason to cheer for and participate in national GDP growth. Yes, this means more taxes on people like you and me, but it's well worth it to prevent a populist revolt.