In the USA, the Democrats only need to call the Republicans' bluff and vote in the FairTax plan, (sales tax with prebate to replace the income tax code). Negotiating the rate upwards for degrowth and increasing the prebate for UBI and good health (not insurance) would put the cost of all consumption at the decision point(the checkout). By applying the tax (50%?) at every transaction, it becomes an anti-greed, anti-complexity scheme. Population and carbon aren't the root of the overshoot problem: consumptionism is. The opposite of consumption is not frugality: it's generosity. The UBI is for paying people to be useful to their places. The only votes being counted right now are the ones at the cash registers that get bundled into briefcases and dropped on K Street.