Congressional liberals aren’t done taxing wealthy Americans. On Thursday, Sens. Bernie Sanders (I-Vt.) and Rep. Peter DeFazio (D-Ore.) introduced the Keeping Social Security Promises Act, which asks the wealthiest Americans to “pay their fair share into the fund.” “The people on top are doing phenomenally well,” Sanders told a news conference on Thursday. “It is time to ask them to help us, in this case with making sure Social Security is there for our kids and grandchildren.” The bill would require those with yearly incomes of $250,000 or more to pay the same 6.2 percent payroll tax that is currently...