Commentary Governments are about to launch a free-for-all of taxes to pay for the free-for-all of spending on COVID-19—taxes on income, on wealth, on beer and billionaires, on Netflix, on carbon, on real estate transactions, on stock holdings, on international holdings, on just about everything. But the tax-and-spenders now in control of the United States, Canada, and most Western countries have missed one of the biggest available tax grabs of all—the trillions in private charitable foundations, much of it under the control of the likes of Bill Gates and Jeff Bezos through their family foundations. Family foundations have been the biggest tax scam going since 1913, when John D. Rockefeller, founder of Standard Oil, convinced the New York legislature to allow him to transfer $100 million in stock to his Rockefeller Foundation. In so doing, Rockefeller—one of the hated robber barons of his time who was embroiled in antitrust suits—would …