Californians vote on billionaire tax to replace federal cuts in healthcare funding

California could become the first US state to tax the net worth of billionaires Tuesday under a ballot measure that has divided liberal leaders nationally and triggered one of the most expensive ballot fights in state history as the ultra-rich scramble to figure out whether they would pay the tax or flee. Proposition 40 would impose a one-time 5% tax on the wealth of Californians whose net worth exceeds $1 billion, with most of the revenue dedicated to replacing federal funding cuts to healthcare.