He was recommended by New York Senator Charles Schumer for nomination to the seat on the Second Circuit that was vacated by Judge Sonia Sotomayor when she was elevated to the Supreme Court of the United States.

From 1997 to 2000, Lohier served as a Senior Trial Attorney with the United States Department of Justice Civil Rights Division, where he worked under Bill Lann Lee and spearheaded employment discrimination-related litigation and worked on other civil rights matters of importance to the federal government.

[2][4] Lohier may be most known in his career at the U.S. Attorney's office for having helped to oversee the investigation into the Madoff investment scandal and worked as a prosecutor on the Marc Dreier case.

[4] Lohier's wife, Donna Hae Kyun Lee, is Senior Associate Dean of Clinical Programs and a professor at the CUNY School of Law.

[9] The couple married in 1999 and lives in Brooklyn, New York[10] In 2021, Lohier was elected to the Harvard Board of Overseers for a six-year term ending in 2027.