Ty Clevenger filed the grievance in New York, where Mr. Comey was a former U.S. attorney and is licensed to practice law. Mr. Clevenger said Mr. Comey’s testimony to Congress that he did not predetermine the outcome of the FBI’s probe into former Secretary of State Hillary Clinton is belied by revelations this week that he in fact started drafting an exoneration months before even speaking with Mrs. Clinton. “Insofar as Mr. Comey gave materially false testimony to Congress, it appears that he violated Rules 1.0(w), 3.3(a)(1), and 8.4 of the New York Rules of Professional Conduct,” Mr. Clevenger...