An internal affairs office at the Justice Department has found that, over the last decade, hundreds of federal prosecutors and other Justice employees violated rules, laws, or ethical standards governing their work. The violations include instances in which attorneys who have a duty to uphold justice have, according to the internal affairs office, misled courts, withheld evidence that could have helped defendants, abused prosecutorial and investigative power, and violated constitutional rights. From fiscal year 2002 through fiscal year 2013, the Justice Department’s Office of Professional Responsibility (OPR) documented more than 650 infractions, according to a Project On Government Oversight review of data obtained through the Freedom of Information Act and from OPR reports.

In the majority of the matters—more than 400— OPR categorized the violations as being at the more severe end of the scale: recklessness or intentional misconduct, as distinct from error or poor judgment.