California's proposed billionaire tax: How does it add up?

California voters will soon decide on Proposition 40, a ballot measure that proposes a new tax on the wealth of billionaires within the state. Proponents of the measure argue it will deliver significant public benefits, though specific details on the financial returns remain a subject of scrutiny.

The proposal has also drawn unexpected criticism, facing opposition from some progressives. Correspondents are examining the conflicting claims surrounding the measure to determine whether it can realistically achieve its stated goals.