Michael John Gerhardt

https://en.wikipedia.org/wiki/Michael_Gerhardt

Michael J. Gerhardt is the Samuel Ashe Distinguished Professor of Constitutional Law at the University of North Carolina School of Law in Chapel Hill. He is also the Director of the Center on Law and Government at the University of North Carolina at Chapel Hill and is an expert on constitutional law, separation of powers, and the legislative process. He is a Scholar in Residence at the National Constitution Center and Visiting Scholar at the University of Pennsylvania Law School. On December 2, 2019, it was announced that Gerhardt would testify before the House Judiciary Committee regarding the constitutional grounds for presidential impeachment in the impeachment inquiry against Donald Trump.