How Much Gets Shuttered In A Shutdown?
Agencies responsible for vital services, such as national security, air traffic control and food safety inspection, would continue operations. But others ? those involving passports, student loans and other routine services ? will shut down unless Congress reaches a deal on federal spending.
Source: http://www.npr.org/2011/02/25/134061482/how-much-gets-shuttered-in-a-shutdown?ft=1&f=1003