John is a member of the firm’s Global Regulatory Enforcement Group. He concentrates his practice on Customs and International Trade Law. John represents both U.S. importers and foreign corporations before all agencies of the federal government with the authority to control the international movement of goods, including U.S. Bureau of Customs and Border Protection, U.S. Immigration and Customs Enforcement, the U.S. Department of Commerce, International Trade Administration, the U.S. International Trade Commission, and the U.S. Treasury Department, Office of Foreign Assets Control.

John also represents foreign corporations and U.S. importers in proceedings under the U.S. antidumping laws. He has substantial experience representing importers charged with both civil and criminal violations of the trade laws, and has litigated before the federal district courts in New York, Maryland and Pennsylvania, as well as the U.S. Court of International Trade.

John has been an adjunct professor of International Trade Law at the Seton Hall University School of Law in Newark, New Jersey since 1986, and he is a member of the Congress of Fellows of the Center for International Legal Studies in Salzburg, Austria. He has been named twice as a Pennsylvania Super Lawyer. John has received an "AV Preeminent" Peer Review Rating from Martindale-Hubbell. Prior to beginning the active practice of law he was a Special Agent of the FBI.