Having dinner with the President is not going to be viewed by reasonable people as one of his duties as FBI director. In fact it is a questionable activity that could be viewed as improper,
No. The FBI Director serves at the will of the President and the President is absolutely entitled to have a dinner meeting with him- as he did with so many other appointees- to see if his views are in sync with his. Comey had no problem with it as long as he thought his job was secure and then when he lost his job he had all sorts of problems. It's the way Washington and the Corporate world roll in general. And no, the FBI Director is not legally independent and no he is not appointed for a ten year term.