From the NYTimes: Department of Homeland Security Shuts Down, Though Essential Work Continues. Though funding for the department ran out early Saturday, officials said its essential functions would continue.
“Most FEMA employees are expected to continue working without pay, and agency leaders have said that its disaster relief fund has enough money for its current and anticipated emergency response activities. Still, the fund would be strained if a catastrophic disaster were to occur during the shutdown, according to agency leaders.”