Senator Elizabeth Warren's plan to tax the fortunes of uber-wealthy Americans could generate $1 trillion less in revenue than she forecasts, according to a new analysis. Warren has proposed imposing a 2% surcharge tax on wealth of $50 million or more, with the rate rising to 6% on billionaires. Her campaign estimates the tax would generate about $3.75 trillion in new revenue, which would be used to fund "Medicare for all" and other public programs. Not so fast, according to the University of Pennsylvania's Penn Wharton Budget Model. The nonpartisan research group says Warren's wealth tax is likely to generate...