A $13 billion property mogul is the latest to flee Britain’s new taxes for Monaco, a warning sign as California votes on a billionaire tax

David Reuben, a British property mogul worth $13 billion, has moved to Monaco, following a trend of wealthy individuals leaving the UK due to changes in tax laws. This move serves as a warning for California, where voters are currently deciding on Proposition 40, which aims to tax billionaires more heavily.