the power of michelle obaa is st ahees ldas e. be considered -- you know, as powerful and clear and crafted. it's a great thatyou created this book to tell this incredible story. i'm wondering did she kw a hss ber unearthing it? >> some of it was new to her, a lot of it was new. she knew -- we had written an article in "e new york tieou--te e he o the ared pit this was her mother's line. her family had long known or suspected those white ancestry. thlw was ot, thtsmin int not tirs mpe d kth particulars. >> thank you. spent justikeo thank you again for the writing ofhe ok ers icomnt the evidence i was just evidence that i would refer to, the laws that are on the books against mixed marrgeyo il whh sjstt hat h m- would suggest you that this is something that was a very common occurrence happening way back then. otherwise it would not have been in need f the laws that you have o the books all over the ace, tryingt re su inror. ryom. >> this is not my area of expertise, but there are people, legal scholars in particular, th were alrlt