"There have been reports a plenty that confuse rather than assure who his biological father even is."
Didn't you know that Obama posted his Birth certificate stating the Obama Sr. was his father. Barack Sr. was a British subject and:
British Nationality Act of 1948 (Part II, Section 5): Subject to the provisions of this section, a person born after the commencement of this Act shall be a citizen of the United Kingdom and Colonies by descent if his father is a citizen of the United Kingdom and Colonies at the time of the birth.
This also was placed on the internet by Obama's Fact Check web site. So, from his own mouth!
http://factcheck.org/2008/08/obamas-kenyan-citizenship/