KIMBERLY STRASSEL: Why James Comey Had to Go. “The FBI head’s sense of perfect virtue led him to ignore his own enormous conflicts.”

We don’t know what these things were, but it seems the head of the FBI had lost confidence — even before TarmacGate — that the Justice Department was playing it anywhere near straight in the Clinton probe. So what should an honor-bound FBI director do in such a conflicted situation? Call it out. Demand that Ms. Lynch recuse herself and insist on an appropriate process to ensure public confidence. Resign, if need be. Instead Mr. Comey waited until the situation had become a crisis, and then he ignored all protocol to make himself investigator, attorney, judge and jury.

By the end of that 15-minute July press conference, Mr. Comey had infuriated both Republicans and Democrats, who were now universally convinced he was playing politics. He’d undermined his and his agency’s integrity. No matter his motives, an honor-bound director would have acknowledged that his decision jeopardized his ability to continue effectively leading the agency. He would have chosen in the following days—or at least after the election—to step down. Mr. Comey didn’t.

Which leads us to Mr. Comey’s most recent and obvious conflict of all — likely a primary reason he was fired: the leaks investigation (or rather non-investigation). So far the only crime that has come to light from this Russia probe is the rampant and felonious leaking of classified information to the press. Mr. Trump and the GOP rightly see this as a major risk to national security. While the National Security Agency has been cooperating with the House Intelligence Committee and allowing lawmakers to review documents that might show the source of the leaks, Mr. Comey’s FBI has resolutely refused to do the same.

He should feel worse than “mildly nauseous.”