From Nancy Pelosi's website:
https://pelosi.house.gov/issues/government-shutdown#:~:text=Both%20military%20personnel%20and%20federal,after%20the%20shutdown%20is%20over.
What is the impact on U.S. military personnel and federal law enforcement?
All active-duty and Guard and Reservists on active-duty orders are excepted and therefore are required to work. On-base non-acute health care may cease, but off-base care provided through Tricare is not affected. On-base child care is open on a case-by-case basis. Federal law enforcement was also required to work. Both military personnel and federal law enforcement will not be paid until after the shutdown is over.
https://wlos.com/news/nation-world/does-ice-continue-working-during-government-shutdown-customs-border-protection-kristi-noem-dhs-pay-officers-social-media-rumors
Does ICE continue working during a government shutdown?
WASHINGTON (TNND) U.S. Immigration and Customs Enforcement is making it clear: there are no changes to immigration enforcement or border policies under a government shutdown.
The agency took to X on Wednesday morning to dispel rumors after people on social media were speculating about what federal government services would be suspended.
Homeland Security Secretary Kristi Noem said DHS officers will work through the "Democrats' shutdown" and that more than 200,000 of these officers will go without pay.
While the officers will go without pay now, the Government Employee Fair Treatment Act of 2019 requires all essential or furloughed employees under the shutdown to be paid retroactively once it ends.