Daniel Stein has joined Mayer Brown as a partner and head of the regulatory and investigations group and as the co-leader of the white collar defense and compliance group, the firm recently announced. Previously, Stein served two terms of duty in the U.S. Attorney’s Office for the Southern District of New York, including as Chief of the Criminal Division for the past year. See also “Mayer Brown Attorneys Discuss Continuing Fallout From Petrobras Scandal” (Oct. 12, 2016).