1) Parent came to the US before age 14 and has been in the US for at least 10 years
2) Parent came to the US after age 14 and has been in the US for at least 5 years
I don't know the details about Obama's parents, but if his mother was born in Kansas, she'd wouldn't matter (even at 18 years old, she'd have been in the US for well over 10 years). His father was 25, so everything is good if his father came to the US before his 20th birthday.
EDIT: Actually clicked on your link... That page only talks about children born abroad. Last time I checked, Hawaii doesn't quite fit that...
edit on 28-4-2011 by potaco because: (no reason given)