is, if his daughter was not conceived using his sperm, was another child? was more than one child? and he says he wants those answers, too. and if there are other children, he wants to reach out in case they want a relationship. as for their daughter, one of the other reasons they decided to pursue this is their daughter will ultimately have questions. and they feel she should have the answers to her dna, to her genetic makeup, to health issues that may arise for her. if she wants to have a relationship with that biological father, they say they're open to it. they know it will be tough but they want to do what's right for her. >> wow. that father, you just feel for him. he's so candid about all of the mixed emotions he's having. but she is his daughter. i mean, he raised her. that is his daughter. but it's just -- you can see how disorienting all of this has been for him. thanks for bringing us that story. so senator kamala harris unveiling what seemed like a new debate strategy last night. she's going to join us live to tell us all about it, next.