Taking a page from GNOME's bug-tracking policy, Trump Administration Outlines Plan to Throw Out an Agency's FOIA Requests En Masse:

The Department of Energy said it will close FOIA requests from last year unless the requester emails the agency to say they are still interested. Experts say it's an "attempt to close out as many FOIA requests as possible." [...]

"I was pretty shocked when I saw this to be honest," Marshall added. "I've never seen anything like this in 10 years of doing FOIA work, and it's egregious for a few reasons. I don't think agencies have the authority to close a FOIA request if they don't get a response to a 'still interested' letter. The statute doesn't provide for that authority [...] The notion that FOIA requesters should keep an eye out in the Federal Register for this kind of notice is ludicrous."

Previously, previously, previously, previously, previously, previously, previously, previously.