Imperator, Melania claims to have written it herself...
Interesting, although I'm not really buying it. The phrase is practically exactly the same, and the impression I get is that, as I said, they have the same script writer, not that melania is looking up old first lady speeches and taking notes on them.
Remember, English isn't her first language, and honestly she doesn't seem to speak it that well. Having someone else write it for her makes perfect sense.