The president shall protect the states from invasion.
Not to mention:
Article 2, Section 1, Clause 5
No Person except a natural born Citizen, or a Citizen of the United States, at the time of the Adoption of this Constitution, shall be eligible to the Office of President; neither shall any person be eligible to that Office who shall not have attained to the Age of thirty five Years, and been fourteen Years a Resident within the United States.
Oh yes, nice. Exactly right. I sure don’t want to short change mObama.