> I guess FDR and many other politicians should have been thrown in prison
For campaign speeches before he was even in office? That's ridiculous. Once in office he used standard administrative procedure to get his way.. it probably helped that literally one month after being in office Congress, who has the right to do so, proposed the 21st amendment. This is a pretty thin example.
> How do the administrative officials implement the legislation without offering official opinions on what that legislation means?
They hire lawyers and consult with them _privately_. None of this has anything to do with using the power of your office to _advocate_ for a specific position.
> Don't they need to be able to discuss the details without worrying about prison?
Can they discuss food safety without implicating the first amendment? I obviously think they can, particularly through very broad administrative procedures already laid out by congress. This is just picking up goalposts and moving them. This argument was pretty narrowly constrained, if not slightly unhinged, to begin with.