Mackenzie Halter
Staff Attorney

Mackenzie joined the Prison Law Office as a Jane Kahn legal fellow in 2023 and was promoted to Staff Attorney in 2025. She works on Plata v. Newsom, Clark v. California, Chavez v. Santa Clara, and Jensen v. Thornell. Before joining PLO, Mackenzie represented incarcerated people who were denied necessary medical care, including gender affirming care. She also worked on a campaign to abolish bail bond debt across California with the Debt Collective. Mackenzie received her J.D. from the Sandra Day O’Connor College of Law at Arizona State University. During law school, she worked as a clinical law student with her school's Immigration Clinic and interned with several civil rights organizations. Before law school, Mackenzie graduated with honors from Arizona State University, where she earned dual degrees in Public Service & Public Policy and Psychology. Mackenzie was admitted to the California Bar in January 2021.