I'm pretty sure such cases will come. But, so far? Which ones would that be? All the meaningful EOs etc that get feedback seem to be quite validly being criticised from a liberal POV. The criticism about the conflicts of interest and inexperience of pending nominations is understandable, even if you probably can disagree reasonably on some.

The pettiest so far seems to be ~5 dems voting against Chao - but that was more about get husband and without consequence.