The BBC reports how the 2019 US government shutdown is playing out:

Nine of 15 federal departments, including State, Homeland Security, Transportation, Agriculture and Justice began partially shutting down after funding for them lapsed at midnight (05:00 GMT) last Saturday.

Hundreds of thousands of federal employees will have to work unpaid or are furloughed, a kind of temporary leave.

In practice, this means that:

• Customs and border staff will keep working, although their pay will be delayed. Airports will continue operating.
• About 80% of National Parks employees will be sent home, and parks could close – although some may stay open with limited staff and facilities.
• About 90% of housing department workers will take unpaid leave, which could delay loan processing and approvals.
• Most of the Internal Revenue Service (IRS) will be sent on unpaid leave, including those who assist taxpayers with queries.
• The Food and Drug Administration will pause routine inspections but “continue vital activities”.

The remaining 75% of the federal government is fully funded until September 2019 – so the defence, veterans affairs, labour and education departments are not affected.