Loyalty to The Law, The United States and The Commander IN CHIEF to carry out LAWFUL ORDERS are actually required as an Oath of Office for an FBI director.
Comey in his past 8 years has proven he only had Loyalty to The Obama Regime, so The President was feeling Comey out to see if he was a Partisan Hack, but he didn't need to bother with that.
All he had to do was look at Comey's career looking the other way when people like Holder, Lynch, Koskinen, Clapper, Lerner and Clinton committed multiple felonies, but not only did he "look the other way" he phucking actively participated in cover ups and cleanup operations.