MacKinnon is the Elizabeth A. Long Professor of Law at the University of Michigan Law School. In 2007, she served as the Roscoe Pound Visiting Professor of Law at Harvard Law School.
MacKinnon is a highly cited legal scholar. She has been a visiting professor at various universities and regularly appears in public speaking events. On February 10, 2005, she attended the premiere of Inside Deep Throat (for which she was featured as an interviewee) and took part in a panel discussion after the film.
On April 29, 2009, MacKinnon argued for the proposition "it's wrong to pay for sex" in an Intelligence Squared U.S. debate.