Commentary Today’s geopolitical emergency has driven domestic policy proposals off the front pages. In time, however, they will reemerge. One idea that is sure to see the light of day is the notion of a universal basic income (UBI), in which the government gives every citizen a regular cash handout regardless of need. UBI proposals, like a bad penny, have emerged with regularity over time–from journalists, tech barons, politicians, and academics. Each proposal differs slightly from the last, but all are wrongheaded. Advocates of UBI exist in quarters of society. On the left, a deep if often misguided effort to help the disadvantaged prompts academics and journalists to advocate the handout. Tech barons, including Mark Zuckerberg, Elon Musk, and Sir Richard Branson, see a UBI as the only way to avoid social unrest as artificial intelligence, they predict, brings on mass unemployment. Libertarians and others on the right, including the …