"He will play a critical role in our administration, and I am grateful that he is willing to serve our country at such a high-level capacity," Trump said according to a statement released by his transition team. The President-elect praised McGahn for his "brilliant legal mind, excellent character and a deep understanding of constitutional law."
McGahn served as general counsel for the National Republican Congressional Committee for nearly 10 years and later was a "crucial player" in weakening FEC regulations on campaign spending during his five-year tenure at the agency, according to an NBC News report published in March. After he resigned from the agency in 2013, McGahn returned to private law practice.
He joined Trump's campaign in March as Trump expanded his team to manage a potentially contested Republican convention.