[Dr. Franklin]

A seated federal officer has never been so sued because congress has plenary power over all federal officers.

Funny, but two courts in 2020 ruled that certain people were not lawfully serving in federal offices that they claimed:
2019–2021 Department of Homeland Security appointment disputes
That wasn't the first time that a court had ruled that way either...

[Mariner]

It was GAO that found them improperly appointed.

That’s the US Congress.

And GAO (Congress) pursued a judicial affirmation.