A key figure in the investigation into D.C. Mayor Vincent Gray's 2010 campaign is asking the Supreme Court to block prosecutors' access to his records.
Lawyers for a District of Columbia businessman at the center of a wide-ranging campaign finance investigation asked the Supreme Court to take a case involving some of the documents seized from his home and office.
Federal agents searched Jeffrey Thompson's home and business in March 2012 and seized more than 23 million pages of documents. Although his name is redacted from the Supreme Court petition that his attorneys filed last month, he has been identified in a previous court order in the case.
Thompson wants some of the documents back, arguing that they were beyond the scope of search warrants.
A grand jury is investigating Thompson's funding of political campaigns. Several people with links to him have pleaded guilty to felonies.