Since 1978, Ms. Marshall has specialized in communications law. She has represented commercial and noncommercial radio and television broadcast stations, handled Federal Communications Commission applications, and has counseled clients concerning all aspects of FCC rules pertaining to broadcasting. She has also advised broadcast clients concerning compliance with the FCC's Equal Employment Opportunity requirements, and helped conduct on-site seminars for clients concerning EEO matters. She has counseled clients concerning transactional matters and has assisted with the defense of broadcast license renewal challenges and the representation of mutually exclusive broadcast applicants in FCC comparative hearings. Ms. Marshall also assisted with the representation of the National Radio Broadcasters' Association which was a radio-only trade association of more than 2,000 stations throughout the United States until it merged into the National Association of Broadcasters.