the short memory subset of americans are most probably the same subset of americans who supported this invasion from beginning to end.
some more got sucked in but they woke up long ago
Waking up does not bring life and damage back.
And I seriously doubt that they are waking up, given that places like Guantanamo are still not closed for one reason: That the majority of Americans is against closing it.
By a March 2010 poll, 60 percent wanted it to stay open.
http://www.nytimes.com/2010/06/26/us/politics/26gitmo.html