Again, that's not how it works. They wouldn't know if they're being investigated unless the USAO told them. And if the USAO had told them they're a target of an investigation then they'd say that instead of this garbage quote. Hell they may even be working with the sdny on some investigations, but in no way does that mean they would know if they themselves are the subject of another investigation. In other words, unless Tether is somehow working with the investigators on an investigation into Tether, Tether wouldn't know they're being investigated.
