 The foundation established the MacArthur Justice Center, a public interest law firm that formed an alliance in 2006 at the Northwestern University School of Law, and litigates for civil rights.In addition, MacArthur Justice centers have been opened in Louisiana (2013), Mississippi, in an association with the law school at University of Mississippi (2014); Missouri (2016); and Washington, D.C. (2017).He is the son of John D. MacArthur, who established the John D. and Catherine T. MacArthur Foundation in his will.