U.S. Sen. Roland Burris' decision not to run for election in 2010 caps a tumultuous six months for the Chicago Democrat that began with his jaw-dropping appointment by a criminally charged governor and was punctuated by his controversial testimony before a state panel.

Burris' varying sworn testimony before the state impeachment committee -- revealed by the Chicago Sun-Times -- led to a U.S. Senate ethics probe, a state perjury investigation, as well as numerous calls for his resignation.
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