Catherine LaCroix teaches courses including environmental law, land use law, and federal court jurisdiction. She is a former partner in the environmental practice group at Hogan & Hartson, LLP, Washington, D.C. (now Hogan Lovells LLP), where she had a regulatory legal practice focusing on environmental health and safety regulation, including compliance counseling, legislative advocacy, consultation on environmental matters in real estate and other commercial transactions, appellate litigation, and administrative proceedings under a range of federal statutes.