That seems like a valid conversation to have! Discussing the upper limit of office for a foreign born candidate seems like a productive one, but OPs outright banning seems like too strong of a response to me.

I think there are plenty of Australians, Canadians, Frenchmen, etc who undoubtedly have more of an American Spirit than many of the apathetic countrymen we have currently. I would prefer they stay in their countries and build movements there that foment positive change, but they could also be a powerful addition to our citizenry, and their perspective could be a valuable one to consider when making policy decisions.

I'm not saying we should give any high office to a border hopper, but for those legal immigrants who speak fluent English and had to work to earn their citizenship, learning the value of the ideals of our Founding Fathers along the way, I believe they are perfectly equipped to hold political office if they feel it is their calling.