Can you give us a link, please? I couldn't find anything specific but did happen upon this that has Hussein's fingerprints all over it:
A person who is a citizen does not lose citizenship by reason only of acquiring the citizenship of another country.
A person who as a result of acquiring the citizenship of another country ceased to be a Kenyan citizen is entitled, on application, to regain Kenyan citizenship.
Obama can return to Kenya at any time to reclaim his citizenship.
By scheduling the final approval of the new constitution on Obama’s birthday the Kenyans appear to me to be extending an open invitation to Obama to show up there after he is “done” in DC.