And the hole just gets deeper for Sen. Roland Burris.  From the Tribune:

U.S. Sen. Roland Burris has acknowledged he sought to raise campaign funds for then-Gov. Rod Blagojevich at the request of the governor’s brother at the same time he was making a pitch to be appointed to the Senate seat previously held by President Barack Obama.

Burris' latest comments in Peoria Monday night were the first time he has publicly said he was actively trying to raise money for Blagojevich. Previously Burris has left the impression that he always balked at the issue of raising money for the governor because of his interest in the Senate appointment.

Talking to reporters last night, Burris said that "sometime shortly after Obama was elected" he tried to throw a fundraiser for Blagojevich, but none of his friends wanted to donate to the guy.  This undermines his latest affidavit, which states that, after talking to the governor's brother about fundraising in October, he refused to make a donation because "it could be viewed as an attempt to curry favor with him regarding his decision to appoint a successor to President Obama."

UPDATE: Lynn Sweet reports that Sen. Barbara Boxer has opened a preliminary ethics investigation:

"Whenever allegations of improper conduct are brought to the attention of the Senate Ethics Committee, we open a preliminary inquiry," Boxer Communications Director Natalie Ravitz said Tuesday.

UPDATE II: The Tribune calls for Burris to resign.