Well he wasnt Obamas real dad. He was already on the mainland by 1960.
Would a good detective or laywer rule out anything without substantive proof?
http://www.airspacemag.com/history-of-flight/Moments-and-Milestones-Birth-of-the-Clippers.html
This is an interesting link about a missing plane from Hawaii in the 1930’s. One of the comments is from a fellow trying to locate “Paul Choy”.