Mueller doesn't want to testify because he doesn't want to answer the question of "When did you realize that there was no collusion?" because the answer is two years ago.'Special counsel Robert Mueller explicitly stated in his Russia investigation report that he and his team had not cleared President Donald Trump of accusations of obstruction of justice.
"If we had confidence after a thorough investigation of the facts that the President clearly did not commit obstruction of justice, we would so state," the report read. "However, we are unable to reach that judgment. The evidence we obtained about the president's actions and intent presents difficult issues that prevent us from conclusively determining that no criminal conduct occurred."'
Mueller explicitly says he can't clear Trump of obstruction of justice
If Trump and his Trumpbots think the Mueller report cleared the former of obstruction of justice?
They are 100% wrong.
But what justice did he obstruct? Was there any Trump-Russia collusion? No. Was there any other crime? No. So.... you need to provide for me, what crime he was obstructing from justice.
And that is because of the follow up question: "Why did you leave the presidency under a cloud for two years when there was open speculation that the President of the United States was a Kremlin Agent?" and the answer to that is that he hoped the President would commit a process crime he could be charged with. Failing in that, he has suddenly turned into an oracle with Delphic utterances we are supposed to decipher.
Bottom line? Today he pushed Congress to impeach Trump for Obstruction.
So we will see what Congress does.