WASHINGTON (CNN) -- The Senate Intelligence Committee's review of U.S. intelligence has found no evidence that political pressure shaped reports on Iraq before last year's invasion, the committee's Republican chairman reported Thursday.

The panel's ranking Democrat called for a broader probe.

Sen. Pat Roberts, R-Kansas, the committee's chairman, said intelligence agencies worldwide assumed Iraq would attempt to revive efforts to develop weapons of mass destruction, which it was required to give up after the 1991 Persian Gulf War.

He compared the intelligence to "a train that just kept moving."

"While there may have been other bits of information or intelligence that would say, 'Whoa, wait a minute, we need to stop the train,' it never really stopped," Roberts said.

"Virtually every intelligence agency, including the U.N., came up with the same assumption, that there would be stockpiles of WMD."[...]

Roberts said committee staff members interviewed more than 200 people, "and not one person to date in very tough interviews has indicated any coercion or any intimidation or anything political."

In a speech Thursday morning at Georgetown University, CIA Director George Tenet rejected suggestions that political pressure influenced the CIA's assessment of Iraq, saying, "We will always call it as we see it." (Full story)

Tenet also discounted published reports that Bush administration officials who advocated an invasion of Iraq bypassed the agency to present dubious intelligence to Bush and other top officials.

"I can tell you with certainty that the president of the United States gets his intelligence from one person and one community: me," Tenet said.

"He has told me firmly and directly that he's wanted it straight and he's wanted it honest and he's never wanted the facts shaded."[...]