What do you call a tax break that delivers 88% of the benefits to upper-income families and subsidizes rich states at the expense of poor ones? If you're a Democrat, you call it a sacred cow. One provision of the Republican's tax-cutting plan that has drawn intense opposition from Democrats is the elimination of state and local tax deductions for those who itemize. Rep. Nancy Pelosi said it was "an insidious effort to raise taxes on middle class families … across America." Sen. Ron Wyden said that "hardworking middle-class folks are not going to appreciate Congress double taxing them." New...