Trump was being asked about the fact that several white supremacist organizations have spoken favorably of his candidacy:

• Trump: "Well, just so you understand, I don't know anything about [former Ku Klux Klan head] David Duke. Okay? I don't know anything about what you're even talking about with white supremacy or white supremacists. So, I don't know. I don't know. Did he endorse me or what's going on, because, you know, I know nothing about David Duke. I know nothing about white supremacists. And so you're asking me a question that I'm supposed to be talking about people that I know nothing about. "
  
  
• Tapper: "But I guess the question from the Anti-Defamation League is, even if you don't know about their endorsement, there are these groups and individuals endorsing you. Would you just say unequivocally you condemn them and you don't want their support?"
  
  
• Trump: "Well, I have to look at the group. I mean, I don't know what group you're talking about. You wouldn't want me to condemn a group that I know nothing about. I would have to look. If you would send me a list of the groups, I will do research on them. And, certainly, I would disavow them if I thought there was something wrong."
  
  
• Tapper: "The Ku Klux Klan?"
  
  
• Trump: "But you may have groups in there that are totally fine, and it would be very unfair. So give me a list of the groups, and I will let you know."
  
  
• Tapper: "Okay. I mean, I'm just talking about David Duke and the Ku Klux Klan here, but ..."
  
  
• Trump: "I don't know any — honestly, I don't know David Duke. I don't believe I have ever met him. I'm pretty sure I didn't meet him. And I just don't know anything about him."
  

I expect this entire exchange to be prominently featured in a campaign ad ... coming soon.