Seven years ago today, in a speech on the Iraq war, Sen. Ted Kennedy fired the first shot in an all-out assault on President George W. Bush's integrity. "All the evidence points to the conclusion," Kennedy said, that the Bush administration "put a spin on the intelligence and a spin on the truth." Later that day Senate Minority Leader Tom Daschle told reporters Mr. Bush needed "to be forthcoming" about the absence of weapons of mass destruction (WMD).

Thus began a shameful episode in our political life whose poisonous fruits are still with us.
The next morning, Democratic presidential candidates John Kerry and John Edwards joined in. Sen. Kerry said, "It is time for a president who will face the truth and tell the truth." Mr. Edwards chimed in, "The administration has a problem with the truth."

The battering would continue, and it was a monument to hypocrisy and cynicism. All these Democrats had said, like Mr. Bush did, that Saddam Hussein possessed WMD. Of the 110 House and Senate Democrats who voted in October 2002 to authorize the use of force against his regime, 67 said in congressional debate that Saddam had these weapons. This didn't keep Democrats from later alleging something they knew was false—that the president had lied America into war.

Senate Intelligence Chairman Bob Graham organized a bipartisan letter in December 2001 warning Mr. Bush that Saddam's "biological, chemical and nuclear weapons programs . . . may be back to pre-Gulf War status," and enhanced by "longer-range missiles that will threaten the United States and our allies." Yet two years later, he called for Mr. Bush's impeachment for having said Saddam had WMD.

Karl Rove is a Fox News contributor. He is the former senior adviser and deputy chief of staff to President George W. Bush. To continue reading his column in The Wall Street Journal, click here.

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Karl Rove joined Fox News Channel as a political contributor in February 2008. He also currently serves as a columnist for the Wall Street Journal. Mr. Rove helped organize the political-action committee American Crossroads. His latest book is "The Triumph of William McKinley: Why the Election of 1896 Still Matters" (Simon & Schuster, 2015). Follow him on Twitter @KarlRove.