From a letter to President Obama by respected legal professionals Larry Tribe, Abner Mikva, Walter Dellinger, and Christopher Schroeder, emphasis mine:
Recent news reports indicate that you are considering nominating Mark Gitenstein to head the Office of Legal Policy at the Department of Justice. At the same time, these reports have raised questions about whether his nomination would be consistent with your administration's ethics policies.
... In light of Mark's representations, the issue areas from which he will need to recuse himself will include the Federal Arbitration Act, private securities litigation, asbestos liability, regulation of the accounting profession, and matters related to the US-German Tax Treaty. ...