I don’t believe this. I am skeptical of Rosenstein, and I think he is a prisoner of his bureaucracy.
But i think he is a by the book guy and it would be beyond foolish to do this.
It’s an empty threat anyway, he can’t just arbitrarily subpoena from members of Congress.
I think it is more likely that this is a deliberate false leak to uncover a leaker.
Really? Isn't that what just happened under the guise of an illegally obtained warrant?
Mueller can. And Rosenstein is his puppet.