White Collar Defense & Government Investigations


Justin Weddle is a skilled trial lawyer, litigation strategist, counselor, and appellate advocate. His experience as a former federal prosecutor and diplomat equips him to provide top-level, sensitive client service both domestically and in cross-border matters. Justin assists clients facing complex fraud-related criminal, civil, or regulatory scrutiny.

Justin prosecuted white collar crime for more than 12 years as an Assistant United States Attorney in the Southern District of New York, building and trying sophisticated and complex fraud cases. Justin also served for three years as Deputy Chief Appellate Attorney, supervising briefing and arguments in the US Court of Appeals for the Second Circuit. He has personally conducted twelve arguments before the Second Circuit.

From 2008 to 2010, Justin served as the US Department of Justice’s Resident Legal Advisor in Bucharest, Romania, focusing on cross-border law enforcement cooperation and information sharing in Southeast Europe. He was the lead US representative at multilateral treaty negotiations to create the Southeast European Law Enforcement Center, an international police and customs cooperation center, and worked closely with EU representatives and European prosecutors.

Prior to government service, Justin practiced at Debevoise & Plimpton in the litigation department with a focus on class actions.


Represent an individual in FIFA-related charges in the Eastern District of New York.

Represented an investment fund and an associated individual in connection with a World Bank Group Integrity Vice Presidency investigation. The investigation was closed with no proceedings brought against the clients.

Represented a manufacturer of optical devices in a federal investigation of allegations of trade secrets theft under the Economic Espionage Act and criminal copyright infringement. The investigation was closed with no proceedings brought against the client or any individual associated with the client.

Represented an individual in connection with bribery allegations.

Represent the independent directors in connection with investigations into financial reporting by an entity.

Represent a former banker in a prosecution in the Southern District of New York relating to LIBOR.

Represent a former banker in a LIBOR-related investigation by the U.S. Department of Justice and Commodities Futures Trading Commission.

Represent the former chief compliance officer of a financial institution in connection with an investigation of the institution relating to Bank Secrecy Act and Anti-Money-Laundering controls.

Appellate counsel for appeal to the Second Circuit of securities and tax fraud convictions from the Northern District of New York.

Represented a major medical company in an investigation being conducted by the U.S. Department of Justice.

Conducted fraud-related investigations on behalf of unsecured creditors’ committees.

Advise an investment fund regarding insider trading and market manipulation restrictions.

Conducting internal investigation for an entity that suffered embezzlement by a financial officer.

Represent an amicus curiae in appeals to the D.C. Circuit, Eleventh Circuit, and U.S. Supreme Court relating to defects in SEC administrative proceedings.

Represent a prominent investment adviser and its principal on appeal to the Second Circuit of a challenge to the validity of an SEC administrative proceeding.

As a prosecutor

LIRR Disability Fraud (United States v. Ajemian et al.). Led the investigation and prosecution of a billion-dollar disability fraud committed by more than a thousand Long Island Railroad retirees, successfully convicting at trial and by plea doctors responsible for more than half of all LIRR disability claims, as well as dozens of other participants in the fraud.

Insider Trading (United States v. Rajat Gupta). Supervised the Government’s successful briefing and argument on appeal regarding the conviction of Rajat Gupta, a former Goldman Sachs board member, for an insider trading conspiracy with Raj Rajaratnam.

Tax Shelter Fraud (United States v. KPMG and United States v. Stein et al.). Initiated and for three years helped lead the Southern District of New York’s efforts to investigate and prosecute fraudulent tax shelters sold during the late 1990s and early 2000s by accounting firms, law firms, and banks. Those efforts resulted in dozens of convictions both at trial and by plea, several deferred prosecution or non-prosecution agreements with professional services firms and banks, and the collection of monetary penalties exceeding $1.3 billion.

Tollman-Hundley Bank and Tax Fraud (United States v. Hundley, Freedman, Cutler & Zukerman). Co-lead counsel in four-month jury trial of top executives of the Tollman-Hundley Hotel Group — former owners of Days Inn of America — for a $100 million bank fraud and a $29 million tax fraud.

Accounting Fraud (United States v. Fasciana & Amato). Co-lead counsel in three-month jury trial against the outside counsel and CFO for the New York securities industry division of a Fortune 500 company for a multi-million dollar accounting fraud.

Pirro Tax Evasion (United States v. Albert Pirro & Anthony Pirro). Trial counsel in six-week jury trial of Albert Pirro, a prominent Westchester lobbyist and lawyer and the husband of the then-Westchester County District Attorney, in a million-dollar tax evasion case.


Columbia University School of Law – J.D., 1995
Haverford College – B. A., 1992

Bar Admissions

New York
US District Court for the Southern District of New York
US District Court for the Eastern District of New York
US Court of Appeals for the Second Circuit
US Court of Appeals for the Third Circuit
US Court of Appeals for the Tenth Circuit
US Court of Appeals for the Eleventh Circuit
District of Columbia Circuit
US Supreme Court
Professional Affiliations
Media Coverage