Mr. Jonas is Co-Chair of WilmerHale’s White Collar Defense and Investigations Practice. His practice focuses on representing corporations and individuals in investigations and criminal defense and grand jury matters. Mr. Jonas' work includes the full range of representation of clients in this area from internal corporate investigations to federal grand jury representation to criminal trials and appeals. He has represented clients in jurisdictions around the country, as well as in cross-border investigations. Mr. Jonas also handles related False Claims Act cases, government enforcement proceedings and civil litigation. He has substantial experience in the areas of federal health care fraud, immigration fraud, accounting fraud, securities fraud, economic espionage and environmental crimes. Mr. Jonas also has experience in the unique issues of representing corporate and outside legal counsel in government investigations. Mr. Jonas frequently represents clients in investigations and litigation involving State Attorneys General. Mr. Jonas currently serves as a lead team member in the monitorship of a major health care corporation.