The State of Aurora requires licenses of persons "who are engaged in the trade of barbering." It will grant such licenses only to those who are graduates of barber schools located in Aurora, who have resided in the state for two years, and who are citizens of the United States. The requirement that candidates for license must be graduates of barber schools in Aurora is probably
unconstitutional as an undue burden on interstate commerce. unconstitutional as a violation of the privileges and immunities clause of the Fourteenth Amendment. constitutional, because the state does not know the quality of out-of-state barber schools.  constitutional, because barbering is a privilege and not a right