The judiciary interprets the law. As I said, you can narrowly say OSC is "official" and "interprets" the law, but it's a deceptive way to describe the situation. Hopefully we'll see another group successully claim standing for being harmed by Hatch Act violations.
An honest way to describe the situation is "the Trump OSC has decided that Trump should investigate Trump and it is unclear if anyone else can sue for relief from a politicized civil service". At the very least "they've put out a statement saying they've changed their interpretation" is far better than the passive voice.
It feels off to frame this as a routine legal question when the branches themselves aren’t behaving routinely. The current executive has reduced the other branches to handmaidens of its will.
An honest way to describe the situation is "the Trump OSC has decided that Trump should investigate Trump and it is unclear if anyone else can sue for relief from a politicized civil service". At the very least "they've put out a statement saying they've changed their interpretation" is far better than the passive voice.