Mueller only can relieve the pressure on Trump, and apparently the former believes the latter is dirty.Strzok was following the FBI counsel's advice.
As he said, when the investigation is over, Congress can have all the info it wants.
But Congress is never, ever in charge of DOJ or FBI investigations: separation of powers.
But now there is an investigation into Mr. Strzok, as to whether or not he committed perjury, obstruction of justice or contempt of Congress. Very serious felonies, BTW. So the key here is to have AG Sessions or President Trump order him to spill his guts. They are his superiors.
An investigation by who? Congress? Congress has no authority to prosecute anyone- they would have to go through the Justice Department......which controls the FBI....
Just because Congress is stomping its feet and making demands doesn't mean that the FBI should let Congress interfere with an ongoing investigation.
But certainly Don the Con can continue to try to interfere with an ongoing FBI investigation.
I don't know what Mueller thinks. I think that Mueller is an aggressive prosecutor that is following all the leads.
Do I think that Don the Con is dirty? Very possibly. Do I believe that Don the Con conspired with Russia? No firm evidence of that yet- I am going to wait and see what Mueller comes up with.
But Don the Con sure acts like he is guilty of something that he fears Mueller will find.