children's book she wrote on the road in between campaign stops in 2008. but nbc's norah o'donnell also talked with her about the birther debate and her brother, as he heads into yet another campaign. good morning, norah. >> good morning. this is president obama's half sister. she lives in hawaii. she talks to the president regularly and also spends christmas with him every year. she's not a real political person and in promoting her latest book, she's thrust into the latest birther debate. i asked her does the president have a birth certificate? >> he has a birth certificate. he was born in the united states. the birth certificate has been authenticated. >> you know what people are saying, it's a certificate of live birth, that's something different. >> not really. >>. >> reporter: she is obama's half sister, born in indonesia and grew up with the president. now, she's talking about her new children's book,รง a tribute to