Mackenzi J.S. Ehrett

MACKENZI EHRETT focuses her practice on representing clients involved in civil and regulatory litigation and appeals.

Prior to joining Sidley, Mackenzi served as a deputy associate counsel in the White House Counsel’s office, where she was responsible for providing legal advice and guidance regarding the nominations and appointments of Article I and Article III judicial nominees, judicial nominations to Washington, D.C. courts, and executive branch nominations.

While attending law school, Mackenzi was the executive editor of the George Mason Law Review, a member of the Supreme Court and Administrative Law Clinics, and a member of the Moot Court and Jessup teams.

Mackenzi’s representative matters include:

• Representing a company defending against alleged violations of the Clean Air Act.
• Secured dismissal of a breach of contract action related to the breakdown of a corporate partnership.
• Successfully moved for dismissal of a False Claims Act case due to improper service.
• Represented a company involved in multiple cases arising out of an industrial accident.
• Represented a medical billing company in a False Claims Act case.
• Represented a school challenging discriminatory penalties assessed against its athletic program.
• Represented a company in a False Claims Act investigation related to billing practices.

• Member, Patrick Henry College Alumni Association Board
• Assistant Coach, Patrick Henry College Mock Trial Teams (2019–2021)
• Member, American Mock Trial Association (AMTA) Civil Case Writing Committee (2016–2021)
• Member, The Federalist Society (2014–Present)