What's wrong with someone who has once sued an agency being in charge of it? Nothing at all.

Just because someone had a matter, which they chose to resolve legally, doesn't mean they're unfit to hold office over that agency. In fact, it may mean just the opposite; that they have insights into an agency that was so wrong that the only way to get its attention was to sue it.

Many a manager in business has later led a department or company which had once snubbed that person, and in having that person take over as the manager, learned how to be  a better department/company.

The only thing that was wrong before Mr. Trump came to office was that the "ruling class" had become so smug, arrogant, and righteous, they had forgotten why they were there - and the people who put them there - and they received the Royal Order of The Boot for their forgetfulness.

The world will not end with the Trump administration, and it may be a much better place in the process.