When you take a test, how many questions do you answer that aren't on the test? The FBI would have followed the guidance which they were given. Nothing unprofessional there, no dig. trump said that the FBI should investigate whatever the Republican majority in the senate says they should. So, when trump wants the senate to set parameters for the investigation, the senate can make the parameters and send them to the White House Council's Office and they give it to the FBI. It must be minutia to consider who actually handed instructions to the FBI when the White House said the senate will set parameters.
I'd like you to explain the goalpost metaphor. What qualified as "moving the goalpost"?