So about a trillion dollars is spent by American taxpayers to kill Iraqis.Aside from the direct cost to American taxpayers, there are additional costs incurred by the war in Iraq.
For instance the cost of dealing with 2 million refugees - primarily in Syria and Jordan - is astronomical. How about the cost to the UN and NGOs - humanitarian support, food aid, and helping refugees? Canada and other NATO countries are paying to hold the bully's coat (by picking up the slack in Afghanistan).
This doesn't even include what it has cost the Iraqi people themselves.
So the Iraq occupation costs everyone money - well, almost everyone. Ah, I see. Transferring more money from those who have little to those who already have a lot. Killing hundreds of thousands of people in the process. Good policy, GWB.