Okay then, Jasper.
Let's pretend that they DO call the SS agents who were in the SUV that took #TRE45ON away from his party. Let's say further that their testimony corroborates Ms. Hutchinson's. Then what? The fact that he had a tantrum because he couldn't go to his big party and insurrection is pretty meaningless in the whole scheme of things. At best, it shows his intent to try to subvert the election.
Let's say they testify and do NOT corroborate her testimony. Same thing -- it's meaningless.
BTW, she stated under oath that this story is what she was directly told by someone apparently present. She did NOT testify that she witnessed or overheard it. The fact that the agent who told her the story has yet to provide a sworn affidavit that it didn't happen and he didn't tell her the story is telling, isn't it? Wouldn't YOU do that, to clear your name?