The Internal Revenue Service issued more than $11 billion in improper payments through its Earned Income Tax Credit program last year, according to an inspector general’s report released this week. Treasury Department deputy inspector general Michael McKenney found that the IRS has failed to comply for two consecutive years with the Improper Payments Elimination Act, which President Obama signed in 2010. The law requires federal agencies to reduce erroneous payments to a rate of less than 10 percent.The IRS estimates that at least 21 percent of its EITC payments in 2012 were faulty. That rate showed a decline compared to...