Did you not read the statue? All you have to do is be a legal residence of Hawaii to have your child registered as born there. Mama Obama could have easily lied about where he was born to get the registration.
Here is a web page that sets the stage for the whole scam:
“The Pennsylvania Democrat who has sued Sen. Barack Obama demanding he prove his American citizenship – and therefore qualification to run for president – has confirmed he has a recording of a telephone call from the senator’s paternal grandmother confirming his birth in Kenya.”