Earlier quoted context omitted.
The GP's point is that 9/11 was turned into an excuse to invade Iraq, even though there was no actual connection.
My feeling (I'm not an American) is that America got attacked and partly lost its mind and partly just had to lash out at somebody in retaliation to keep up its deterrence as a superpower. That climate made the Iraq invasion look like a good idea at the time. As far as I understood it, 9/11 was never stated as an excuse to invade Iraq (as opposed to Afghanistan). At best as a reason to take the region more seriously.…
1) wanted to be in a war, since it historically makes the administration more significant
2) wanted to invade Iraq to "finish Dad's business" (and show him up)
3) oil
4) military industrial complex loves war
Sadly, #3 is the most sane reason we got in that war.
Oh yeah, and Halliburton made a mint on Iraq war support. The corruption was that blatant.