How Important is Cheney's Admission that There was NEVER Any Evidence Linking Iraq and 9/11?

Cheney said in an interview on Fox News:

How important is Cheney's admission?

Well, 5 hours after the 9/11 attacks, Donald Rumsfeld said "my interest is to hit Saddam".

He also said "Go massive . . . Sweep it all up. Things related and not."

And at 2:40 p.m. on September 11th, in a memorandum of discussions between top administration officials, several lines below the statement "judge whether good enough [to] hit S.H. [that is, Saddam Hussein] at same time", is the statement "Hard to get a good case." In other words, top officials knew that there wasn't a good case that Hussein was behind 9/11, but they wanted to use the 9/11 attacks as an excuse to justify war with Iraq anyway.

Moreover, "Ten days after the September 11, 2001, terrorist attacks on the World Trade Center and the Pentagon, President Bush was told in a highly classified briefing that the U.S. intelligence community had no evidence linking the Iraqi regime of Saddam Hussein to the [9/11] attacks and that there was scant credible evidence that Iraq had any significant collaborative ties with Al Qaeda".

And a Defense Intelligence Terrorism Summary issued in February 2002 by the United States Defense Intelligence Agency cast significant doubt on the possibility of a Saddam Hussein-al-Qaeda conspiracy.

And yet Bush, Cheney and other top administration officials claimed repeatedly for years that Saddam was behind 9/11. See this analysis. Indeed, Bush administration officials apparently swore in a lawsuit that Saddam was behind 9/11.

Moreover, President Bush's March 18, 2003 letter to Congress authorizing the use of force against Iraq, includes the following paragraph:

(2) acting pursuant to the Constitution and Public Law 107-243 is consistent with the United States and other countries continuing to take the necessary actions against international terrorists and terrorist organizations, including those nations, organizations, or persons who planned, authorized, committed, or aided the terrorist attacks that occurred on September 11, 2001.