As one who supports the WoT and the invasion of Iraq, I say yes to sending our troops without a declaration of war when the administration believes it is necessary to defend America. This is not the first time this has happened.
As for having our troops in Iraq creating a democracy, that's not their purpose as warriors. However, I've yet to see a better alternative. Will democracy in Iraq and Afghanistan emerge victorious? Perhaps. But it will never happen if we now cut and run. Nor may it happen if we stay yet fight a politically correct war. What America has to do is come to a decision; do we stay or leave? I'm for staying. But if we do, the gloves must come off and we must win. Anything short of that would be disastrous. Gen. W. T. Sherman and his march through Georgia to the sea comes to mind as an example. The same with Phil Sheridan's march through the Shenandoah.
Also, a vote by Congress to authorize military force is equivalent to a declaration of war as far as I'm concerned.