It may or may not be powerful, but it's certainly not even proper English.
One might say: "I am mad. Nobody is madder than I am." You can even shorten that to: "Nobody is madder than I."
You would never say: "Me is mad. Nobody is madder than me is."
You would think this Harvard educated genius could speak proper English. Oh, wait, maybe he wasn't a US citizen when he was educated in his proper native language.
Exactly. You saved me the trouble of posting that.
He was just reading the Teleprompter. "Nobody's madder than me" is what was actually written there.
You should direct your criticism to his speechwriter...