Who is more believable?

An FBI director who by his own admission can be swayed to mirror campaign language of the party holding office.

or

An FBI director who leaks investigative records. 

or

An FBI director who publicly closes then reopens one investigation while refusing to state another doesn't exist at all.

or

An FBI director who'll parrot the claims of a political party that a crime occurred even though the party refuses to let his people verify it.