U.S. Attorney Patrick Fitzgerald said today that federal authorities arrested Democratic Gov. Rod Blagojevich today because the governor went on "a political corruption crime spree" that needed to be stopped.

Fitzgerald said secret tape recordings showed Blagojevich was attempting "to sell the U.S. Senate seat" that President-elect Barack Obama recently vacated. The governor has the sole power to pick Obama's replacement under the state constitution.

"The conduct would make Lincoln roll over in his grave," Fitzgerald said, quoting Blagojevich as saying the Senate seat is "a bleeping valuable thing. You just don't give it away....I've got this thing and it's bleeping golden."

Blagojevich wasn't against the corrupt deal for the Senate seat, he was against "being stiffed in the corrupt deal," Fitzgerald said.

The remarks came at a news conference to discuss charges against Blagojevich and his chief of staff, John Harris. Blagojevich and Harris are scheduled to appear in court at 1:30 p.m. before U.S. Magistrate Judge Nan Nolan.

Robert Grant, FBI special agent in charge of the Chicago office, characterized Illinois' place in the pantheon of political corruption.

"If it isn't the most corrupt state in the United States, it's certainly one hell of a competitor," Grant said. "Even the most cynical agents in our office were shocked."

Grant said he called Blagojevich about 6 a.m. and told the governor that two FBI agents were outside his door and that they had a warrant for his arrest.

After initially asking Grant "is this a joke," Grant said Blagojevich was "very cooperative."

Grant said the arrest of Blagojevich should serve as notice that "business as usual will no longer be tolerated. That selling your office for personal gain is a thing of the past."

Fitzgerald said the investigation into Blagojevich continues, but authorities acted today to avoid further harm taking place.

"I was not going to wait until March or April or May to get it all nice and tidy" and bring charges," he said. "I think that would be irresponsible."

Fitzgerald thanked the Chicago Tribune, which had been reporting on the investigation, for honoring a rare request about eight weeks ago not to report on certain aspects of the investigation that he said could have been jeopardized.

In the criminal complaint, authorities allege that Blagojevich and Harris sought to pressure the Tribune to fire editorial writers that were critical of his administration. Tribune Co. had been negotiating with the Illinois Finance Authority to purchase Wrigley Field as part of the company's efforts to sell the Cubs baseball team.

Tribune editor Gerould Kern said today he never experienced any pressure over the Tribune editorials.

"There was never an instance where I was contacted or called, where any influence at all was placed against me. There were no instances of that."

Kern said he became editor on July 18 and since then there's "never been any hint of that. I was as surprised as everyone else when I saw that."

Kern said nobody from the Blagojevich administration ever contacted him about the editorials.

"I never got a complaint. I never got any contact whatsoever from Blagojevich, no complaint--nothing from inside Tribune company."

Kern pointed out there were no staff reductions in the editorial board. "The facts are what they are."