This is from Barry's own State Dept.:
"The U.S. Government recognizes that dual nationality exists but does not encourage it as a matter of policy because of the problems it may cause. Claims of other countries on dual national U.S. citizens may conflict with U.S. law, and dual nationality may limit U.S. Government efforts to assist citizens abroad. The country where a dual national is located generally has a stronger claim to that person's allegiance. "Source
Do you think the language would have been stronger if they thought that a dual national [In Barry's case a quad-national] would become Commander and chief of our Armed Forces? /sarc
“obama admits he is a dual citizen on his own website”
Please feel free to provide a link to that.