The opponents of Odinga no doubt have a huge grudge against Obama.
Remember Obama helped Odinga ( allegedly Obama’s cousin—and a muslim leader and current Kenyan Prime Minister) campaign for the Kenyan presidency....it was very high profile-—Obama is a celebrity there—when Odinga lost, Odinga supporters ( Islam extremists) went on a rampage with massive bloodshed of Christian Kenyans.
So perhaps someone in the Odinga oppostion helped investigators obtain the birth certificate.
Keep in mind that the riots killed and injured many. There are probably many Kenyans who do not have warm fuzzies for Odinga and Hussein.
BTTT