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Presented By: University of Michigan Law School

Presidential Impeachment, from Johnson to Trump: What Have We Learned?

Commemorating Constitution Day

Please join us for UM's annual commemoration of Constitution Day. Professor Michael Gerhardt (UNC School of Law) and Professor Jonathan Turley (GWU Law School)- two of the four scholars who testified, one on each side, on constitutional standards for impeachment before the House Judiciary Committee during President Trump's impeachment- will debate. MLaw Professor Rich Friedman will moderate.

Join via Zoom at

Michael Gerhardt ( serves as the Burton Craige Distinguished Professor of Jurisprudence at the University of North Carolina- Chapel Hill School of Law. His teaching and research focuses on constitutional conflicts between presidents and Congress. Gerhardt is the author of seven books, including “Lincoln’s Mentors” (Harper Collins, 2021), and leading treatises on impeachment, appointments, presidential power, Supreme Court precedent, and separation of powers.

Jonathan Turley ( is the J.B. and Maurice C. Shapiro Professor of Public Interest Law, the Director of the Environmental Law Advocacy Center, and the Executive Director of the Project for Older Prisoners at the George Washington University Law School. He is a nationally recognized legal scholar who has written extensively in areas ranging from constitutional law to legal theory to tort law.

Read Professor Gerhardt's written testimony before the House Judiciary Committee on “Constitutional Processes for Addressing Presidential Misconduct" at:

Read Professor Turley's written testimony before the House Judiciary Committee on “The Impeachment Inquiry Into President Donald J. Trump: The Constitutional Basis For Presidential Impeachment” at:

Read both Professor Gerhardt's and Professor Turley's prepared statements for the hearing of the Subcommittee on the Constitution for the impeachment of President William Jefferson Clinton at:

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