Mr. Hartman represents companies and individuals in criminal and civil investigations, trials, and appeals primarily involving complex federal regulatory programs, with an emphasis on environmental matters, and advises clients on compliance with those programs. He also conducts internal investigations, counsels clients regarding corporate compliance programs, and represents clients in Congressional investigations regarding lobbying, ethics, and related issues. He has represented clients in industries including maritime, energy, pharmaceuticals, healthcare, recycling, chemicals, manufacturing, and real estate.