Professor Ernst joined the Georgetown faculty in the 1988-89 academic year. He is the author of Lawyers Against Labor (1995), for which he received the Littleton Griswold Award of the American Historical Association and co-editor of Total War and the Law (2003). In 1996, he was a Fulbright Research Scholar at the National Library of New Zealand, and in 1998 he was the Jack and Margaret Sweet Visiting Professor of History at Michigan State University. He was a John Simon Guggenheim Memorial Foundation Fellow during the 2003-04 academic year. From 2006 to 2010, he was co-editor of “Studies in Legal History,” a book series sponsored by the American Society for Legal History and the University of North Carolina Press. He teaches courses in American Legal History and Property.