Justice Dept. Watchdog Will Be Tested in Next Chapter of Clinton Investigation Firestorm

In 1991, Mr. Horowitz joined the federal prosecutor’s office in Manhattan, where he briefly overlapped with Mr. Comey. He led a huge investigation which implicated almost an entire police precinct in Harlem in a scandal involving drug dealing, robbery in addition to bribery.

“the idea took an extraordinary amount of independence,” said Mary Jo White, the former United States attorney in Manhattan. “Prosecutors work with police on their cases, so he was investigating in addition to prosecuting, in effect, his partners in law enforcement.” He won an award via the attorney general, in addition to Ms. White named him head of her office’s public corruption section.

In 1999, Mr. Horowitz moved to Washington to join the Justice Department’s criminal division in addition to became chief of staff to its leader, James K. Robinson, where his judgment was lauded. “He had to know what to ask the prosecutors, without having intimate knowledge of a case, judge the quality of the incoming information in addition to send the idea to the boss,” said Shan Wu, who was counsel to Attorney General Janet Reno, noting which Mr. Horowitz took notes on an individual notecard in addition to simply remembered the rest of the information.

Mr. Horowitz left the Justice Department in 2002 to join Cadwalader, Wickersham & Taft as a defense lawyer in addition to was later nominated by President George W. Bush to the United States Sentencing Commission. In 2012, President Barack Obama tapped him to be the Justice Department’s inspector general.

By the time Mr. Horowitz started off his job, his office was well into its investigation of the Fast in addition to Furious scandal, a botched operation in which officials via the Bureau of Alcohol, Tobacco, Firearms in addition to Explosives let guns enter Mexico from the hopes of tracing them back to criminals.

Mr. Horowitz handled the politically fraught situation by reaching out to Democrats in addition to Republicans on the congressional oversight committees. In a meeting with former Representative Jason Chaffetz, Republican of Utah, in addition to Representative Trey Gowdy, Republican of South Carolina, Mr. Horowitz told them about his own conflicts of interest in addition to said he had assigned others in his office to handle those parts of the investigation.