Article:

American Thinker: Murphy's Law, the Peter Principle and Barack Obama: "What happens when everything that can go wrong in a person's character formation does go wrong, and that person continues to be promoted to his level of incompetence?

President Barack Obama happens."

Comment: My only quibble here is when the author says that Obama's elevation to the presidency came thanks to the Peter Principle. I would argue that something else is at work here as Obama reached his level of incompetence as a US Senator, perhaps even as an Illinois State Senator.