[2] As a senior counselor, Shea advised Barr on changes at the Federal Bureau of Prisons after the death of the sex offender Jeffrey Epstein at the Metropolitan Correctional Center in New York City.

[3] Shea chose as his chief of staff David Metcalf, 34, who had been counsel to Barr's deputy attorney general, Jeffrey A.

Trump nominated Justin Herdman to be Shea's permanent successor as U.S. Attorney, and Michael R. Sherwin to lead the office on an interim basis.

[4] On February 11, 2020, Barr took the rare step of reducing a sentencing recommendation by four prosecutors in the U.S. Attorney's office that President Donald Trump had called “very horrible and unfair".

[13][14][15][16] Barr told ABC News that Shea had initially signaled to him that the recommendation would be about half the time that the line prosecutors requested.

[19][20] The Justice Department said the companies were exploiting the case to gain access to information about the investigation's sources and methods that Russia could weaponize.

A Mueller-related case continues against 13 Russians including a part-owner of Concord, Yevgeny V. Prigozhin, an oligarch who is sometimes known as "Putin’s chef".

[20] Shea wrote the Justice Department's motion on May 7, 2020, to dismiss the charges against Michael Flynn, the former U.S. national security advisor to Donald Trump.

Flynn had pled guilty to charges of lying to the Federal Bureau of Investigation about his conversations in 2016 with Russia's ambassador.