tavis: lani guinier is a professor at -- of law at harvard. she is also a noted author whose books include "lift every voice ." she joins us tonight from cambridge. good to have you on the program. the supreme court has agreed to hear a case that is going to open up a this debate about affirmative action in this country. that debate, will kick up in advance of the election campaign of barack obama, the reelection of the first african-american president. i want to start with some basics. tell me about this case, out of texas. what it is about and why you think the supreme court agreed to hear the case. >> the case is a lawsuit by a two white women who were not admitted to the university of texas. they sued claiming the university was considering a race as one of the factors for admission. and that the consideration of race was not tailored to survive constitutional scrutiny. the women went to others universities and are going to graduate this semester. in some ways the case is moot because they have already achieved their educational success. t