USA Guide 2026 : District of Columbia
Ranked Individuals
Provided by Chambers
Debevoise & Plimpton LLP offers a strong group of defense and internal investigations practitioners. The practice is well placed to represent individual clients as well as companies across a number of sectors in criminal trials. They possess additional expertise advising on FCPA matters.
Provided by Chambers
Debevoise represented the City of Chicago and its Mayor in an investigation by the House Committee on Oversight and Government Reform into sanctuary jurisdictions.
Provided by Chambers
The group is incredibly talented and very responsive. I know I can call on the Debevoise team, pretty much any time day or night and am likely to get immediate response.
Debevoise is proactive, always a step ahead of the issue and really tries to be on top of things.
Debevoise & Plimpton has numerous strengths that distinguish the department. As a foundational matter, the firm's department has subject matter expertise across the entire array of Congressional investigations.
Provided by Chambers
David O'Neil is co-chair of the white-collar and regulatory defense group at Debevoise. He is well regarded for his representation of corporate and individual clients in high-profile investigations and is experienced in handling complex matters with cross-border elements.
One of the finest lawyers I have ever worked with. David is a thoughtful, wise lawyer, a beautiful writer and a true champion of the client.
David is not just a leader in this practice, but a true mentor to a lot of people across the industry.
David is a remarkable lawyer that is practical, thoughtful, has a nice way with clients and weighs risks exceedingly well. He is a fabulous white-collar attorney.
Litigation partner Arian June is based in Debevoise's Washington, DC office. She boasts an impressive white-collar criminal defense and investigations practice. Her client base includes conglomerates and financial institutions.
She is a trusted adviser and an expert in her field.
Arian is masterful at guiding you through some big things. She is creative and a good thought partner.
Arian is amazing. I know I can call her day or night with any issue and she will take on issue as though it is her issue having a direct impact on her.
Litigation: White-Collar Crime & Government Investigations
Litigation: White-Collar Crime & Government Investigations
USA 2026
Practice area: Litigation: White-Collar Crime & Government Investigations
Location: California
View department profile for USA 2026
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