Former Macomb County prosecutor Carl Marlinga voluntarily testified in 2004 before a grand jury investigating whether or not he gave official favors to accused criminals in exchange for campaign donations during his unsuccessful bid for Congress in 2002. He testified in the hopes that the grand jury would not indict him. His 2004 testimony is now being used against him in an attempt to highlight incriminating and contradictory statements at his trial last week. Wayne State University Law Professor Peter Henning stated this move is "very high-risk" as accused criminals have the constitutional right not to incriminate themselves, nor can they be compelled to testify at their own trials.