I’m not 100% certain he was born in Kenya (heck, I couldn’t be unless I had been present!); I think it is possible for sure, for a number of reasons. Ditto with Canada. What I don’t think is that he was born in HI, although that is of course a possibility. If he was born in HI there is no reason on earth for him to provide a faked COLB instead of a real birth certiticate.
I think grandma Sarah has confused Jr and Mark who was born in Kenya in 1964. Naturally Mark’s mother is Ruth, who is also white. To me Canada makes the more sensible route, especially so close to Seattle and with the access to socialized medicine. Also freepmail coming at you.