What did he say and when did he say it?  The White House is warning Sen. Roland Burris of Illinois to take the weekend to think about whether he's got anything more to reveal.  There are mounting questions about how he got appointed to fill the vacant senate seat of President Obama.  Burris has now admitted that he did try to raise funds for Rod Blagojevich, the former governor under investigation for trying to sell the appointment.  Burris also admits he had three phone conversations with Blago's brother, Robert, of Nashville.  Democrats in Illinois are calling on him to resign.  The Chicago Tribune's Swamp blog is following developments closely.