Roland Burris

Former Illinois Attorney General Roland Burris, right, speaks during a news conference, as Illinois Gov. Rod Blagojevich looks on Tuesday, Dec. 30, 2008 in Chicago. Blagojevich defied U.S. Senate leaders and his own state's lawmakers by appointing Burris to replace President-elect Barack Obama in the U.S. Senate.

Former Ill. Attorney General Roland Burris, right, takes questions after Illinois Gov. Rod Blagojevich announced Burris as his choice to fill President-elect Barack Obama's U.S. Senate seat Tuesday, Dec. 30, 2008 in Chicago.

U.S. Rep. Bobby Rush, D-Ill., speaks after Illinois Gov. Rod Blagojevich announced his choice of former Ill. Attorney General Roland Burris to fill President-elect Barack Obama's U.S. Senate seat Tuesday, Dec. 30, 2008, in Chicago.

Roland Burris speaks at the New Covenant Baptist Church during a rally in Chicago, Sunday, Jan. 4, 2009. Burris is Ill. Gov. Rod Blagojevich's appointee him to fill President-elect Barack Obama's Senate seat.

Roland Burris reacts to a speech by U.S. Congressman Bobby Rush, D-Ill., at the New Covenant Baptist Church during a rally in Chicago, Sunday, Jan. 4, 2009.

Illinois U.S. Senate appointee Roland Burris holds a news conference at Chicago's Midway airport Monday, Jan. 5, 2009, before leaving for Washington for a high-stakes showdown on Capitol Hill about whether he'll succeed President-elect Barack Obama in Congress.

Illinois U.S. Senate appointee Roland Burris talks with the media after arriving at Baltimore/Washington International Thurgood Marshall Airport in Linthicum, Md., Monday, Jan. 5, 2009. Burris faces a showdown on Capitol Hill about whether he'll succeed President-elect Barack Obama in Congress after being appointed last week by embattled Gov. Rod Blagojevich.

Illinois U.S. Senate appointee Roland Burris, center, is escorted by Capitol Police officers as he arrives on Capitol Hill in Washington, Tuesday, Jan. 6, 2009.

Illinois U.S. Senate appointee Roland Burris, right, escorted by Senate Sergeant of Arms Terrance Gainer, left, arrives on Capitol Hill in Washington, Tuesday, Jan. 6, 2009.

Senate Sergeant at Arms Terrance Gainer, left, escorts Illinois U.S. Senate appointee Roland Burris into the Secretary of the Senate's Office on Capitol Hill in Washington, Tuesday, Jan. 6, 2009.

Illinois U.S. Senate appointee Roland Burris makes a statement after departing Capitol Hill in Washington, Tuesday, Jan. 6, 2009, after he was turned away when he appeared to take his seat.

Cold Shoulder — AP Photo/Charles Dharapak

Illinois U.S. Senate appointee Roland Burris leaves the U.S. Capitol, seen rear, in Washington, Tuesday, Jan. 6, 2009.

Illinois U.S. Senate appointee Roland Burris, left, meets with Senate Majority Leader Harry Reid of Nev., Wednesday, Jan. 7, 2009, on Capitol Hill in Washington.

D.C. Bound — AP Photo/Charles Rex Arbogast

Illinois U.S. Senate appointee Roland Burris smiles during a news conference in Chicago, Monday, Jan. 12, 2009, after hearing he would be seated in the Senate later this week.

Sen. Burris — AP Photo/Lauren Victoria Burke

Sen. Roland Burris, D-Ill., accompanied by his wife Berlean takes part in a mock swearing-in ceremony administered by Vice President Dick Cheney on Capitol Hill in Washington, Thursday, Jan. 15, 2009, after an official swearing-in on the floor of the Senate.

U.S. Sen. Roland Burris walks past reporters on Tuesday, Feb. 17, 2009, after taking a tour of the Emergency Response Center at the corporate headquarters of State Farm in Bloomington, Ill. Burris now acknowledges attempting to raise money for ousted Gov. Rod Blagojevich - an explosive twist in his ever-changing story on how he landed a coveted Senate appointment from the man accused of trying to sell the seat.

Senate Snafu — AP Photo/M. Spencer Green

Sen. Roland Burris, D-Ill., listens to a conversation during a public policy luncheon before The City Club of Chicago in Chicago, Wednesday, Feb. 18, 2009.

Then Illinois Democratic gubernatorial candidates, U.S. Rep. Rod Blagojevich, D-Ill., right, and Roland Burris, left, get together during Democratic Day at the Illinois State Fair Aug. 16, 2001, in Springfield. Defying U.S. Senate leaders and his own state's lawmakers, Blagojevich appointed Burris as the replacement for President-elect Barack Obama despite federal charges that Blagojevich tried to auction off the seat.