Minsky, McCormick & Hallagan, P.C. (MMH) is a Chicago firm founded in 1975 by Joseph Minsky that has focused exclusively on U.S. immigration and nationality law for nearly five decades. Partners Margaret McCormick and James Hallagan later joined to expand the practice. The firm covers citizenship, permanent residency, temporary work visas, asylum and humanitarian relief, removal defense and employer compliance for individuals and businesses.