US Dept of Commerce shutdown

Earlier this year I heard about the threatened shutdown of WWV and WWVH, NIST's standard time and frequency services, due to the withdrawal of government funding - an outrageous proposal for those of us around the world who use NIST's scientific services routinely to calibrate our clocks and radios.

Today while hunting for a NIST security standard that appears to no longer be online, I was shocked to learn that it's not just WWV that is closing down: it turns out all of NIST is under threat, in fact the entire US Department of Commerce.

Naturally, being a large bureaucratic government organization, there is a detailed plan for the shutdown with details of certain 'exempt' government services that must be maintained according to US law although how those services and people are to be paid is unclear to me. After the funding ceases, DoC employees are required (or is that requested?) to turn up for work for a few more hours to set their out-of-office notifications (on the IT systems that are presumably about to be turned off?), then piss off basically.  

To me, that's an almost unbelievably callous way to treat public servants. 

So is this fake news? Is it "just politics", brinkmanship by Mr Trump's administration I wonder? 

The root cause, I presume, is the usual disparity between the government's income and expenses, fueled by battles between the political parties plus their 'lobbyists' and the extraordinarily xenophobic pressure to spend spend spend on 'defense'. I gather US-Mexico border wall is, after all (surprise surprise) to be funded by the US, so that's yet another splash of red ink across the government's books.