Whats the name of this song/video?!

My teacher showed me this video today in my u!.s!. history class today!. It was about Obama, McCain, Hilliary and Bill clinton, and also george bush!. It was a aniamation vid!. Each person had sang a verse!. I rememeber barrack skipping through a forest with a pony/unicorn and McCain was in a tank and then in the hospitial!. also, Bush was packing up to leave the white house!. Does and 1 know the name of this song/video!? also, I rememeber them all saying it's time for some changes at the end of their verse!.Www@Enter-QA@Com

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