Obama, plagiarism??

The facts here are that Hillary Clinton is accussing Obama of stealing parts of someone elses speech after he borrowed a riff about the power of words that was used two years ago by his friend, Massachussetts Governor Patrick and delivered it in his own speech. The main ethical principle is did Obama commit plagiarism? Some ethical issues to try to figure this out are is it ethical to borrow the words of someone else and use them in your own speech if that person allows you to do so? Did Obama give credit to Governor Patrick when he borrowed or used his words? We do not know the exact answers to these questions so it is hard to decide who is right or wrong. One other question to think about is, Is Hillary just doing anything she can to make Obama look bad because she knows she is behind in the democratic race? This is politics, and it gets dirty. I do not think Obama really did anything wrong. He is way too smart too plagiarize, and I think Clinton is desperate to make him look bad...