Ever since Iraq was just a twinkle in W's eye, people have been using The Cliff analogy to describe the decision to go to war.
While there have been arguments that we should/should not follow our Dear Leader over the cliff, I think it's fair to say that we're past that now.
Why are we still squabbling over this?
We're clearly over the cliff.
As a matter of fact, we're falling. Even George is past the many points where he announced that his critics "had no new ideas". As one of the many early critics, I pointed out that once you're over the cliff, there are no new ideas to be had. That the whole purpose of the "cliff" theme in the cliff analogy. The more generous "slippery slope" analogy at least leaves some proverbial hope for redemption. Other than growing wings, the Cliff Analogy has none.
We're past the cliff, folks. We're amidst the "well, hopefully the cliff was really high and the ground is far, far away" memes and well within the "perhaps we'll die of natural causes before we hit the ground" phase -- i.e. Iraq will be "another presidents problem".
Short of being Intelligently Designed with wings in the next few years, America had better start looking for a grouping of soft-looking trees.