About a year or so ago we had a discussion over Obama's comments during his campaign to become the presidential nominee of the Democratic Party in which he said that once he was president that he'd overturn laws he deemed unconstitutional (a big gaffe because any high school student can tell you that presidents can't do that; only the courts can).
Anyway, at the time you wrote something like: yeah, he said the same thing when he was in Fairfield. Well, I think I've found on youtube what you were referring to. Although he doesn't say it as explicity as the gaffe he made in Denver, you can sort of interpret it as the same thing (the discussion starts at about 2:20): http://www.youtube.com/watch?v=tlPzmyX6sOc Is this what you were referring to?