US Attorney fired for not following through on voter-fraud cases. But FBI Director says there were no not-followed-through cases to his knowledge

Gee, another lie. From Reuters:

Sen. Charles Schumer, a New York Democrat, noted that among the shifting reasons given for firing prosecutors was failure to energetically pursue voter-fraud investigations.

Schumer asked Mueller if he was aware of any FBI voter-fraud probe that should have resulted in an indictment but did not.

"Not to my knowledge," the FBI director replied.