Republican 2012 presidential candidate Herman Cain mixed up the Constitution with the Declaration of Independence during his campaign announcement. The gaffe was particularly embarrassing because it occurred while Cain was lecturing Americans on the need to “re-read” the Constitution.

“We don’t need to rewrite the Constitution of the United States of America, we need to reread the Constitution and enforce the Constitution,” Cain said. “And I know that there are some people that are not going to do that, so for the benefit of those that are not going to read it because they don’t want us to go by the Constitution, there’s a little section in there that talks about life, liberty and the pursuit of happiness.”

“Because that’s when it says when any form of government becomes destructive of those ideals, it is the right of the people to alter or abolish it,” he added.

The language Cain was referring to appears in the Declaration of Independence, not the Constitution.

Watch the video, via ThinkProgress.

[h/t Ian Millhiser]