I need some legal help related to the Iraq War Resolution

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I am trying to figure something about this entire thing. The Iraq War Resoltuion, which can be found at http://www.c-span.org/resources/pdf/hjres114.pdf , says the following:

Whereas the President and Congress are determined to continue
to take all appropriate 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, or
harbored such persons or organizations;

Does this mean that the IWR legally binded Bush to only invade Iraq if there was a Saddam / 9-11 connection? I am assuming so since Bush mentioned the following in his letter to congress before he invaded Iraq:

Dear Mr. Speaker: (Dear Mr. President:)

Consistent with section 3(b) of the Authorization for Use of Military Force Against Iraq Resolution of 2002 (Public Law 107-243), and based on information available to me, including that in the enclosed document, I determine that:

(1) reliance by the United States on further diplomatic and other peaceful means alone will neither (A) adequately protect the national security of the United States against the continuing threat posed by Iraq nor (B) likely lead to enforcement of all relevant United Nations Security Council resolutions regarding Iraq; and

(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.

Why would he have even mentioned this information if he didn't feel obligated to, obviously he knew it was a lie. I need a honest answer from somebody that understands law. Is there a gray line here or was Bush legally binded to only invade if there was a Iraq / 9-11 connection? I'm sure this has been looked over before but I am having a hard time finding information about the legal aspect of this.

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1. shameless kick