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 and serving in the Computer, Hacking, and Intellectual Property section, the Major Crimes Unit, the Complex Frauds Unit, and the Securities and Commodities Fraud Task Force. 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.



FCPA, Bribery and Corruption-Related Allegations

Represent an individual in FIFA-related extradition proceedings and prosecution in the Eastern District of New York.

Represent individuals in high-profile FCPA investigation and related US securities class actions litigation regarding alleged corruption in Brazil.

Represented leading European executive in investigations and potential extradition proceedings relating to alleged bribery on Central America.

Represent banker in FCPA-related investigation regarding alleged bribery in Africa.

Securities and Financial Fraud-Related Allegations

Represent a class of plaintiffs seeking the return of approximately $14.9 billion from the SEC for unauthorized disgorgement collections.

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 US Department of Justice and Commodities Futures Trading Commission.

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

Represent a relator in an FCA case relating to alleged fraud on the US.

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.

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

Appellate Work

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

Represent an amicus curiae in appeals to the DC. Circuit, Eleventh Circuit, and US 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.

Internal Investigations

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

Trial Work

Trial counsel in multi-week trial regarding fraudulent conveyance, preference, and other claims arising out of multi-billion dollar leveraged buyout.

Health Care

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

Advised surgeon in dispute regarding pharmaceutical billing.

Advised ad hoc committee of lenders to laboratory company facing false claims act and other actions related to hundreds of millions of dollars in alleged fraudulent billing.

Economic Espionage Act and Criminal Copyright

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.

Anti-Money Laundering and Sanctions

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

Advise European bank relating to OFAC and N.Y. Dept. of Financial Services Issues.

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 Courts: Southern District of New York, Eastern District of New York, and District of Massachusetts
US Courts of Appeals: First, Second, Third, Tenth, Eleventh, and District of Columbia Circuit
US Supreme Court
Co-author, "Prosecutors Should Be Wary Of Overreach After Marinello," Law 360, March 30, 2018.
Co-author, "Corporate Resolution Roundup," Corporate Disputes, Jan-Mar 2015 Issue.
Author, "It's Not Just the Swiss," Corporate Counsel, September 1, 2014.
Co-author, "BNP Paribas and Credit Suisse: Everything's Negotiable," Corporate Counsel, July 1, 2014.
Professional Affiliations
Adjunct Professor of Clinical Law, New York University School of Law (2012-2014)
Awards and Honors
Recognized by Super Lawyers as a Top Rated White Collar Crimes Attorney in New York, NY, 2017
Listed in Who’s Who Legal, Business Crime Defense for both Corporates and Individuals
Media Coverage
Quoted, "New Attack on the SEC’s Enforcement Arsenal," Wall Street Journal, October 30, 2017
Quoted, “DOJ Official Says New Policy May Impact Trials, Settlements,” Law360, September 10, 2015