Ukraine interfered with our election.
The DNC colluded with Ukraine to interfere in our election.
The Clintons had Epstein murdered.
Seth Rich was involved in the DNC hack.
Seth Rich was murdered because he was involved in the DNC hack.
Hunter Biden was doing something illegal in Ukraine.
Biden bribed Ukraine to fire the prosecutor
Biden bribed Ukraine to protect his son





In your opinion, all of these things are true, right?  You don't have proof, but you believe they are true.  

If you apply the same logic to any of these issues that you've applied to the subpoena, you should know for a fact that they are all false.

In reality, neither of us can conclude that any of them are true or false.  All we can do is consider all the evidence that's available, and then decide how likely true or not true each issue is.