Someone in his admin must know that comparing Iraq to Vietnam is a BAD idea.
It's not just Bush, though.
America must remember one of the lessons of the Vietnam War. Then, as now, we fought a war with the wrong strategy for several years. And then, as now, we corrected course and began to show real progress. Many historians today believe that by about 1972 we and our South Vietnamese partners had succeeded in defeating the Vietcong insurgency and in setting South Vietnam on a path to political self-sufficiency. But America then withdrew its support, allowing the communist North to conquer the South. The consequences were dire, and not only in Vietnam: numerous deaths in places such as the killing fields of Cambodia, a newly energized and expansionist Soviet Union, and a weaker America. The consequences of abandoning Iraq would be worse.
"Things were going JUST FINE before they pulled the plug!" is kind of a common idea on the right.