Yes, Republicans were ambivalent about effectively running the war in Iraq. Most important to them was their precious tax cut.
John McCain, the 2008 Republican presidential nominee said the USA could spend 100 years completing the social engineering project in Iraq.
Every Republican applauded, knowing that the precious tax cut came first, and dumping the entire bill for the war onto the national credit would be maintained forever.
In WWII, Americans on the home front were willing to sacrifice. People paid increased income taxes, victory taxes and had money deducted from their weekly paychecks to buy war bonds. And subjected themselves to food and fuel rationing.