 When you're on trial and the prosecutor isn't allowed to ask a question, but if the witness goes someplace, the prosecutor can pounce. They've opened the door. It's a classic trial thing. Once somebody's opened the door, you're done. Then the door is open. So Biden opened the door to a conversation about why he wasn't prosecuted for the documents that were found in his garage in Delaware. But Lester Holt missed the opportunity.