He has authored numerous amicus curiae briefs for the U.S. Supreme Court. Munsil served in a judicial clerkship for Judge Daniel A. Manion of the U.S. Court of Appeals for the Seventh Circuit and was  appointed by former Arizona Governor Fife Symington to the Arizona Juvenile Justice Advisory Council. He is author or co-author of two legal manuals.
He has written numerous legal briefs for the U.S. Supreme Court. Munsil served as a judicial clerk for Judge Daniel A. Manion of the U.S. Court of Appeals for the Seventh Circuit and was appointed by former Arizona Governor Fife Symington to the Arizona Juvenile Justice Advisory Council. He is author or co-author of two legal manuals.