 Among these cases was "County of Allegheny v. ACLU" in which the Supreme Court held that the Lubavitch had the right to maintain a menorah on public property in Pittsburgh.He represented an Air Force psychologist in the Supreme Court case testing his constitutional right to wear a yarmulke while on duty.In 1976, Lewin represented the Hasidic community of Williamsburg in the Supreme Court, in its constitutional challenge to a racially conscious legislative reapportionment, urging a rule of constitutional law that the Supreme Court accepted 20 years later.