U.S. Sen. Chuck Grassley’s comparison of civilian trials for terrorists to the murder trial of O.J. Simpson is “false and disrespectful,” Iowa Democratic Party Chairman Michael Kiernan said Thursday.

While questioning Attorney General Eric Holder about the idea of prosecuting five men accused as co-conspirators in the Sept. 11 attacks in a federal court in New York, Grassley said assurances that they will be convicted ring hollow since “I think a lot of Americans thought O.J. Simpson ought to be convicted of murder, rather than being in jail for what he’s in jail for now. It seemed to me ludicrous.”

“I’m a farmer, not a lawyer, but I just wanted to make an observation,” Grassley said.

Kiernan said Grassley is engaging in “Karl Rove-style fear-mongering tactics” that are designed to “distract from the larger national security issues facing our country.”

“Trial by jury is the bedrock of the US Constitution,” Kiernan said. “Grassley calls this constitutional right into question and insults the American people, who every day make difficult and complicated decisions. There is simply no place for Grassley’s disrespectful politicization of this issue in today’s debate.”

After Grassley’s statement, Holder assured Iowa’s senior senator that even if acquitted terror suspects would not be released in the U.S.

Liberal blog Talking Points Memo has video of the exchange between Grassley and Holder.