Karl Rove is coming to a very sticky end...

Stephen Gillers, a New York University law professor, said that it was unusual for a witness to be called back to the grand jury four times and that the prosecutor's legally required warning to Rove before this next appearance is "an ominous sign" for the presidential adviser.

"It suggests Fitzgerald has learned new information that is tightening the noose," Gillers said. "It shows Fitzgerald now, perhaps after Miller's testimony, suspects Rove may be in some way implicated in the revelation of Plame's identity or that Fitzgerald is investigating various people for obstruction of justice, false statements or perjury. That is the menu of risk for Rove."

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A former federal prosecutor called the development "a classic example of what happens when there's a large political overlay to a criminal investigation."


"Each time you testify, there's an increasingly larger risk," said E. Lawrence Barcella Jr., a partner at the law firm of Paul, Hastings, Janofsky & Walker.


"In a normal criminal investigation, most defense lawyers are extremely cautious about their clients testifying even once before a grand jury and are generally loathe to let them testify more than once because of the false statement statute, the control that a prosecutor has over a grand jury and because the witness's lawyer cannot be in the grand jury room," Barcella said.