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2026-01-05T18:53:25.776Z Share Copy link Email Facebook WhatsApp X LinkedIn Bluesky Threads lighning bolt icon An icon in the shape of a lightning bolt. Impact Link Save Saved Read in app This story is available exclusively to Business Insider subscribers. Become an Insider and start reading now. Have an account? Log…

A proposed billionaire tax in California has the wealthy threatening to flee, according to a letter written by power lawyer Alex Spiro to Gov. Gavin Newsom.In a December 11 letter that was obtained by Business Insider, Spiro lays out his opposition to the proposed tax on behalf of his clients,…