>Why did POTUS interview (FBI Dir) Mueller a day prior to SC appointment if impossible to assign position?
A little late to the party so maybe this has been posited already.
MSM and Ds have been making hay with "Trump is a buffoon / an idiot / incompetent etc." narrative.
Giving impression of interviewing for an impossible appointment feeds that narrative.
"Is Trump an idiot? Doesn't he know that he can't appoint Mueller as FBI director? Ha ha ha!"
Why don't they dig more? Because it confirms their perception that, at best, Trump is an outsider that doesn't know how things work in Washington, or at worst, that Trump is an idiot that is incapable of holding the office.
>Make your opponents underestimate you, then strike.