Mackenzie is currently on leave completing a judicial clerkship on the Third Circuit until August 2023.
Mackenzie is the Head of Strategy & Community Building at the Legal Priorities Project, where his work focuses on developing a legal movement with the skills, capacity, and knowledge to protect the long-term future. Alongside LPP's legal strategies team, Mackenzie works to identify and develop legal initiatives that have the potential to reduce existential and catastrophic risks, with a focus on biosecurity and pandemic prevention.
Prior to joining the Legal Priorities Project, Mackenzie was a Legal Fellow at New York Lawyers for the Public Interest and received his J.D., cum laude, from Harvard Law School, where he worked on complex systems-reform litigation with the ACLU of DC; the Department of Justice, Civil Rights Division; the Office of the New Jersey Attorney General; and the Innovation Law Lab.
Mackenzie received a B.A. in political science, summa cum laude, from Boston College, winning the G.F. & J.W. Bemis Award for exemplary service to others and the Donald S. Carlisle Award, awarded to the top graduate in political science, before completing a Fulbright grant in Ourense, Spain.