A partial shutdown of the Federal Aviation Administration, prompted by a political dispute, is adding to the country's debt. This month alone, that shutdown will cost the Treasury $1 billion in uncollected airline ticket taxes.
The shutdown is happening because of a labor dispute, a long-standing rivalry and a disagreement over subsidizing small airports. It's not clear when it will all be resolved now that members of Congress are leaving Washington, D.C., for their summer recess.
NPR's Renee Montagne talks to NPR's Brian Naylor about what's behind the standoff.