I don't think Tiger's mother is white.
I believe Tiger's mother is Thai. I believe his father met her while serving in the Air Force in Thailand.
One of Tiger's grandparents was white (father's side).
His mother is Thai, moreso she is Chinese-Thai, and his father a half-black, one-quarter American Indian, one-quarter white), as reported by Woods himself.
'But just "who I am" remained contested ground. According to Time magazine, Woods' coming out as a Cablinasian caused "a mini-racial firestorm ... Woods' remarks infuriated many African Americans who ... see him as a traitor ... Some blacks saw Woods' assertion of a multiracial identity as a sellout that could touch off an epidemic of 'passing.'
Adding fuel to the fire stirred up by Woods' comments are their political implications. Congress is considering adding a multiracial category to the 2000 census, and supporters of the controversial new category immediately seized upon Woods' statement as evidence that the old categories -- black, white, Asian and Pacific Islander, native American and "other" -- are inadequate. Civil rights groups like the NAACP, who are bitterly opposed to adding the multiracial category because they fear it will lead to a loss of black political and economic clout, are not likely to enjoy the spectacle of Woods becoming a poster child for multiracialism.'