Quotes from the news wire:
It’s hard to point the finger at Senate Democrats when there aren’t very many names before them, the Trump team has fallen behind on an essential aspect of running the most complicated, important, diverse organization on the planet and you can’t do it properly if you don’t have the right people put in place.
Uncertainty is the bane of good management. And there's an awful lot of uncertainty right now, an acting person is a bit like the substitute teacher. They may be a wonderful teacher, but the fact that they're the substitute teacher means they get no respect, they have no perceived authority to solve things, they don't set the lesson plan, and you also don't build the same kind of rapport with your peers across government, which is also super important.
As with any large organization, no one individual is going to be able to run the whole place by themselves, it's going to be the team. And you need to have people in leadership that work well together, so while the White House has equities on who gets the job, at the end of the day, the secretaries ought to have the final say on who will be there because they are the ones who will make it work.