It's an independent investigation....that's the whole point. It is apolitical, despite what Trump and/or the right wing media would have you believe.
HOW is it an 'independent investigation'?
Robert Mueller should never have taken / been allowed to take the role as Special Counsel because he was the MENTOR for Fired Former FBI Director James Comey. The massive Conflict of Interest is UNDENIABLE ... by any sane, non-partisan, NON-Trump-Hating Butt-hurt snowflake. And let's not forget that he is constantly continuously committing Obstruction of Justice by refusing to comply with a Federal Congressional subpoena mandating that he, Rosenstein, and the FBI turn over documents / files. This makes him a CRIMINAL leading a witch hunt investigation of the democratically elected President.
His entire team was / is made up of Pro-Hillary Trump-Hating Hillary/DNC supporters and donors. There is not one NON-Trump-Hating Pro-Hillary member on his team. He even has THE Clinton Foundation Lawyer on his team. Until he was exposed, he also had the notorious, infamous, exposed 'We'll Stop Trump' FBI Agent Strzok on his team...and the man has been exposed for not only criminal political bias but for committing crimes in an effort to protect Hillary Clinton and her staff.
Their investigation has revealed crimes across the liberal spectrum, specifically involving the massive Conspiracy involving Barak Obama, his Cabinet, and Directors and Deputy Directors of his DOJ, CIA, NIA, and FBI,
DOJ Deputy Director Rod Rosenstein authored the argument for why Former FBI Director Comey should be fired in the 1st place yet now he is protecting Mueller's investigation into 'Obstruction' by President Trump for firing Comey...which he had the full Constitutional authority to do as well - ANOTHER MASSIVE Conflict of Interest. When he was challenged on this by members of Congress Rosenstein THREATENED Congress, declaring he could have them investigated as well.
So please remind me again how the hell this was ever in any way an 'independent' investigation....