POTUS is extremely, extremely limited in whom he can nominate for all posts, but especially the top ones. The personnel management is run by the swamp.
That is why so many shitbirds were hired, especially early on.
Once Trump has more of his own people in place at OPM and Homeland Security he will be able to reshape the federal government but it is a long process.
Apparently Ocasio the Idiot has not been paying attention to how "subpoena power" has been working out for the House for the past 8 years.
The way Rahm and Lois and all the rest dealt with subpoenas is how the Trump family should deal with subpoenas.
Exactly the same.
POTUS does not seem remotely worried about what the Democrat House will do.
I think we should take POTUS at face value on this subject and watch the show.