There are two large, unconnected circles which represent the two major categories of citizenship. One circle is the naturlaized citizen. The other circle has at least three smaller circles within it: citizen by place of birth, as separate from citizen by parents at birth, and citizen by both parents and place of birth, of that category there has never been dispute. That third category is where the other two inner circles overlap, forming the jus soli + jus sanguina category of which Rep. The Minor v Hapersett & Rep. Howard (author of the 14th Amend.) said there had never been any dispute.
That is what diagram Van Irion held up in his presentation to Malihi.
Van Irion’s venn diagram can be seen here: http://www.scribd.com/doc/76900058/Flier-Handout-Obama-Not-a-Natural-Born-Citizen-with-Venn-Diagram-Support-Art2SuperPAC
FWIW, Van Irion’s diagram appears to state that children born to US parents outside the boundaries of the US are not NBC’s.
This has nothing to do with Venn diagramming. Evidently you’ve become confused because I used a triangle analogy. This is about the language, not a diagram. I suggested pictures of triangles only to help visualize the difference between the words.