I guess it is not totally unfounded to blame the President for Iraq but the decision was supported by Congress and the American People at the time. As far as the decision to stay, even the Democrats are backing off discussions of immediate withdrawal. Most Americans do not support the Cut-and-Run approach.
I also don't feel that "most Americans" are against "water boarding" or Warrantless wiretaps of terrorists.
If you choose to believe the polls, keep in mind how easy it is to push an agenda using carefully engineered poll questions. For instance, if you ask people if they are pro-life and you might get a majority saying yes. However, if you ask these same people if they support the killing of unborn babies, the results would be quite different.
I am one who believes that the national media does seek to drive an agenda and purposely only present poll results that serve that end.