I left out the 500,000+ people Saddam had killed because, who cares? /s
Except we weren't, not legally speaking. War was never declared. Slipping into war without congressmen and senators ever having to go on the record as supporting it has caused nothing but disaster. It's also unconstitutional, as the Constitution clearly gives the power to declare war to congress, not to the president.
If George H. W. Bush had been forced to make his case for war against Iraq to congress it either wouldn't have happened or the war aims would have been much more clearly defined from the start.
But it's spilled milk now, no point crying over it. The question is: How do we recover from the damage done to the GOP? Trump's answer is cut it loose, admit Bush screwed up and change the subject.
If you don't think Bush screwed up it's for the best to keep quiet about it. We all saw how much good defending his brother did for Jeb.