Liberals KNOW, for certain, that, the issue of Trump/Russia collusion is dead, and that it was a complete farce from the beginning.
They also know, for certain, that the issue of obstruction of justice has no merits whatsoever.... but....
They think that if they keep those issues alive through the election cycles of 2018 and 2020, that they stand a chance of winning back congress and perhaps even the presidency. Thus, Mueller is being supported and defended and encouraged to fight the good battle for democrats.
It’s all going to backfire on them, and Mueller will retire from public view being seen as a complete fool.
This will be, at least, the third strikeoiut for Mueller. He kept 4 innocent men in prison to protect the gangster Whitey Bulger. This ultimately cost the public over $100M in compensation to the families for false incarceration. Mueller then went on to botch the anthrax investigation, falsely accuse a scientist who was trying to help the FBI, and ultimately caused that scientist to commit suicide.
No wonder Mueller was head of the FBI. He perfectly reflects the incompetence, criminality, and arrogance that is today's FBI.