Mary H. Schnoor

Mary Schnoor represents clients in administrative and complex civil litigation, with particular expertise in appellate matters. As both an advocate and counselor, Mary helps her clients reach favorable outcomes in novel and challenging litigation landscapes. She has briefed numerous cases in federal and state courts, argued appeals, and advised senior government leaders on a wide range of Administrative Procedure Act issues and questions of strategy.

Mary has represented clients in a variety of industries in challenges to agency action under the APA. She also has substantial experience with the False Claims Act, personal jurisdiction, standing, and other statutory and constitutional issues. In her prior government service as Deputy General Counsel at the Department of Homeland Security, Mary oversaw the rulemaking process for all significant DHS rules, led the completion of high-profile regulatory actions, and counseled on the diverse statutory and regulatory schemes administered by DHS and its component agencies, including CBP, CISA, FEMA, TSA, USCIS, and the U.S. Coast Guard.

Mary served as a law clerk to Justice Ruth Bader Ginsburg and to Judge Posner (Seventh Circuit).