My recognized inability to produce the subpoenas doesn't prevent you from being able to answer my question. Why would you still believe the subpoenas don't exist when Pompeo and Giuliani, their recipients, acknowledged receiving them?
https://i.imgur.com/P53g4Nh.pnghttps://i.imgur.com/DD4fN7I.pngSurely if you had a rational reason for not believing Pompeo and Giuliani, you would answer the question.
It doesn't prevent me at all. What prevents me from answering is because it serves as a mechanism of distraction from your inability to produce the subpoenas.