Haha, I agree with other posters. It seems like a strange statement that it's always good to see US presidents wives nude photos, especially in public. Sounds like a bit of an invasion of privacy, as I'm sure not all of them would be interested. Take a look at a list of the first ladies of the US:
https://en.wikipedia.org/wiki/List_of_First_Ladies_of_the_United_States. I have no need to see any of them nude, but there are some that I would definitely not want to see. Melania is a beautiful woman, but I don't see how that or her past career has much to do with politics.