From The Washington Times:

FBI agents violated agency rules at least 747 times in 18 months while conducting investigations involving politicians, candidates, religious groups, news media and others, according to a 2019 FBI audit obtained by The Washington Times. 

The internal review revealed a ratio of slightly more than two “compliance errors” per sensitive investigative matter reviewed by FBI auditors. These errors included agents’ failure to obtain approval from senior FBI officials to start an investigation, failure to document a necessary legal review before opening an investigation and failure to tell prosecutors what they were doing.