Judge Lohier is a judge on the United States Court of Appeals for the Second Circuit. He was nominated by President Barack Obama in March 2010 and unanimously confirmed by the United States Senate in December 2010.

For the decade prior to his appointment, Judge Lohier was an Assistant United States Attorney in the Southern District of New York, where he served as Senior Counsel to the United States Attorney, Deputy Chief and Chief of the Securities and Commodities Fraud Task Force, and Deputy Chief and Chief of the Narcotics Unit. As the Deputy Chief and Chief of the Securities and Commodities Fraud Task Force, Judge Lohier was responsible for overseeing the Bernard Madoff prosecutions, the investigation and prosecution of Marc Dreier, the Galleon and other hedge fund-related insider trading cases, as well as several other high-profile fraud cases. Prior to his service as an Assistant United States Attorney, from 1997 to 2000, Judge Lohier served as a Senior Trial Attorney with the Civil Rights Division of the United States Department of Justice, where he spearheaded employment discrimination-related litigation and worked on other civil rights matters of importance to the federal government.

From 1991 to 1992 and from 1993 to 1997, Judge Lohier was associated with the law firm of Cleary, Gottlieb, Steen & Hamilton in New York. In 1992 and 1993 Judge Lohier served as a law clerk for the Honorable Robert P. Patterson, Jr. of the United States District Court for the Southern District of New York.

Judge Lohier graduated from Harvard College in 1988. He then earned his J.D. in 1991 from New York University School of Law, where he received a Vanderbilt Medal.

Prior to his appointment, Judge Lohier was a member of the Board of Directors of the Black, Latino, Asian Pacific American Law Alumni Association and of the Board of Directors of the New York University School of Law Alumni Association. He also served as First Vice-Chairperson of Brooklyn Community Board 6. Judge Lohier is currently a member of the American Law Institute, the Federal Bar Council Inns of Court, and the New York University School of Law Board of Trustees, as well as an adjunct professor of law at New York University School of Law. He is a recipient of the New York University Alumni Association's Eugene J. Keogh Award for Distinguished Public Service.