Following law school, John served as law clerk to Associate Judge Matthew J. Jasen of the New York Court of Appeals, New York's highest court.
John began his litigation career with the New York City law firm of Willkie Farr & Gallagher. He obtained uniformly outstanding results at Willkie Farr, and developed an expertise in complex civil litigation and international disputes. At trial and on appeal, he prevailed in cases involving RICO, antitrust, contract law, federal securities law, accountants' liability, trusts and estates, and a series of cross-border banking disputes arising from the global fraud committed by the Bank of Credit and Commerce International (BCCI). He also served as assigned counsel to indigent criminal defendants by appointment of the Court of Appeals and Appellate Division, First Department.
Building upon his experience at Willkie Farr and his commitment to public service, John accepted an appointment to the United States Department of Justice in Washington, D.C. In that capacity, he successfully represented Cabinet officers and other Executive Branch officials in civil cases across the country. For example, John brought suit on behalf of the United States to remedy the largest bank failure in the history of the Commonwealth of Virginia; he recovered the largest civil judgment under the anti-fraud statute, FIRREA. John was lead counsel for Treasury Secretary Robert E. Rubin in the first civil case brought under the Bank Secrecy Act (a key anti-money laundering statute); he recovered a substantial judgment and other systemic relief. He successfully defended FBI Director Louis Freeh in an emergency action challenging the Director's actions under the First Amendment. John received several commendations and awards for his work at the Justice Department including, on three occasions, the Attorney General's Special Achievement Award for Sustained Superior Performance of Duty.
In recent years in private practice, John has specialized in representing governments in civil litigation in the United States. Over the past decade, he has represented governments in connection with cross-border disputes. This litigation has reached the United States Supreme Court on two occasions. John also has successfully handled civil RICO suits in the federal courts in Washington, D.C., and has represented individuals before the Securities and Exchange Commission.
For many years, John has been active in various public
service initiatives on a statewide basis. From May 2008 through June
2013, he served as Deputy Counsel to the New York State Commission on Judicial
Nomination, which evaluates and nominates persons for vacancies in the offices
of Chief Judge and Associate Judge on the New York Court of Appeals. He is a member of the Board of Trustees of Albany Law School, Union University. John is also a member of the Board of Trustees and Treasurer of The Historical Society of the Courts of the State of New York, which has been established to document and preserve the history of the people and events that have shaped New York's jurisprudence. Since the 1980s, John has served on committees of the New York State Bar Association and New York City Bar Association, particularly in the areas of government affairs and ethics.
John is admitted to practice in New York and the District of Columbia, and is a member of the bars of the U.S. Supreme Court; U.S. Court of Appeals for the Second Circuit; U.S. Court of Appeals for the D.C. Circuit; District Court for the Southern, Eastern, Northern and Western Districts of New York; District Court for the District of Columbia; and the District Court for the Northern District of California.