IRS Commissioner John Koskinen has confirmed to Congress that illegal immigrants granted amnesty under President Obama’s new programs could claim back refunds even when they never filed returns to pay their taxes in the first place. Sen. Chuck Grassley, who had pressed Mr. Koskinen over the issue, released written responses Wednesday ... and, in fact, illegal immigrants granted the amnesty will now be able to claim refunds on tax returns they never even filed, thanks to the Earned Income Tax Credit. “To clarify my earlier comments on EITC, not only can an individual amend a prior year return to claim...