I've already answered this question directly multiple times, but here you go:

These are the reasons I believe the subpoena exists:
- Congress announces that they subpoenad Pompeo.
- They posted a detailed letter that explained the scope and reason for the subpoena.
- Pompeo confirmed he received the subpoena.
- Other witnesses that the House claimed they subpoenad around the same time for the same investigation also confirmed they received their subpoenas.


I understand that you don't think the subpoena exists because the subpoena it isn't posted the internet, you don't consider the fact that Pompeo said he received it relevant, and we aren't able to find empirical evidence proving it exists.  I disagree with you, it's nothing personal.

Lets get back to the topic of this thread now.  What makes you think Biden pressured Ukrainian to fire the prosecutor?  I am very confident that he did in fact pressure Ukraine to fire the prosecutor, but the main reason is because he said he did, and I don't have empirical evidence, so I'm just wondering what you think about the whole thing.