The problem is National Security. who knows what external connections these foreign born women have to their home countries. If Trump is president he is likely to share our deepest secrets with his wife. She isn't going to be vetted like he is. She would be the weak link in a Trump presidency that we cannot afford. Ol' Romney isn't a fool, he is on to something of grave import.
Yeah, the women threats we have to worry about are hot wives of successful businessmen rather than '1st ladies' who have never been proud of their country and terrorists to whom Obama hands out visa so they can come to America and kill Americans.
It's sad that Trump's wife loves this country more than Michelle Obama does.
Regardless of how you spin it, Mrs Obama is a natural born American citizen and could run for president on her own because of that. As an African-American she has some justification for not being proud of her countries treatment of Blacks. Nevertheless, her loyalty to this nation has never been questioned and she has no ties to a foreign homeland. All that makes her who she is comes from this country where she was born and bred. She is American and, is NOW proud to be one.
That can't be said of Trump's lady. We have to trust that the founding fathers meant that natural born stipulation to include the president and his wife as ONE. If his help mate's loyalty is split between this country and another's, his , by proxy, is too. Any natoinal secrets he is trusted with are at risk if he divulges them to her. This could be Mata Hari part 2!