Of course it is. If they can't borrow more money, "non-essential" portions of the government will have to shut down. Yahoo.
a lot more than non-essential operations will shut down - unless you don't consider things like the FAA, border security, food inspections, and so on "essential"
They're all doing a lousy job and will not be missed. Private enterprise, the US Army and public spirited vigilante volunteers, can do a far better job.