Six Nobel-winning economists released a letter supporting the California Billionaire's Tax. The laureates point out that California billionaires are worth an estimated $2.3 trillion — yes, that’s trillion — up from $700 billion, an increase of more than 220% in one decade. They can afford it #prop40 #billionairetax https://fortune.com/2026/09/19/california-billionaire-wealth-tax-prop-40-movement-more-states-federal-government-other-countries/