Beyond the two figures arrested today -- Gov. Blagojevich and his chief of staff John Harris -- there are numerous other individuals mentioned by code names in the indictment.  There is rampant speculation about who is who and some of the identities are more obvious than others.  A better picture will emerge in the coming days, no doubt.

There are also two entities -- the Chicago Tribune and the Service Employees International Union (SEIU) -- that, according to the U.S. attorney's complaint, came up in the discussions between Blagojevich and his advisors.  In the case of the former, the governor allegedly tried to get Tribune Co. executives to fire editorial board members in return for his aiding the sale of Wrigley Field.  In the case of the latter, Blagojevich allegedly sought to enlist SEIU to help him ultimately secure a high-paying job in exchange for picking Obama adviser Valerie Jarrett to fill Illinois' vacant U.S Senate seat. 

While both entities were apparently approached by Blagojevich aides about his schemes, there's no evidence in the complaint that either responded actively or committed any wrongdoing. 

SEIU communications director Ramona Oliver put out this brief statement:

"We have no reason to believe that SEIU or any SEIU official was involved in any wrongdoing."

No one who has read the full complaint would have reason to think otherwise. (Full disclosure: The SEIU Illinois State Council sponsors this website.)

Meanwhile, the Tribune Co. released the following statement:

No one working for the company or on its behalf has ever attempted to influence staffing decisions at the Chicago Tribune or any aspect of the newspaper’s editorial coverage as a result of conversations with officials in the governor’s administration.

Again, nothing in the U.S. Attorney's filing suggests that the company acted on the governor's wishes.

UPDATE (6:50 PM):  In the complaint, Blagojevich floats the idea of exchanging the Senate pick for a high-level position at Change to Win, a national coalition of labor unions that includes SEIU.  Change To Win put out this statement today:

No one connected with Change to Win ever considered, discussed or promised any position at Change to Win to Governor Blagojevich, his staff or his advisers. In the affidavit released by the United States Attorney, a position at Change to Win is discussed only in conversations between the governor and his advisers. The first time Change to Win learned of any of the matters raised in the criminal complaint was with today’s public release of the affidavit.

UPDATE II (12/10, 8:21 AM): Marcy Wheeler analyzes SEIU's statement and comes to this conclusion:

Particularly given Fitz's description of people coming forward to tell their sides of the story (and the damned familiarity of that "US Attorney's request about not sharing information" from seeing it so often in the CIA Leak Case) I would imagine that Fitzgerald has heard SEIU's side of any conversations with Blago, and found nothing much there to be interested in. [...]

I'd say that my experience with Fitz's detailed indictments/complaints, coupled with the SEIU statement, leads me to believe that Fitz doesn't believe any of the SEIU's involvement was criminally corrupt.