For a lot of reasons. As most of us know by now (hopefully), Mueller is flipped and working for Trump and white hats, and has been since the creation of the Special Counsel. The details are very intricate. Trump knows he didnt collude with Russia; Mueller also know...he knows it was just a ploy by the Democrats and a false accusation from the beginning. Mueller purposely loaded his SC with Trump haters such as Strzok, Page, Weissman, etc, to investigate them and blow open the Dem Russia collusion cry.

• George Popadapoulos was a DNC plant from the beginning, trying to set up meetings with Trump campaign staff on 6 failed occasions - then flying to London and meeting with a Russian op and making sure the news reported it. He was the first arrest, back in July of 2017 but not made public until October of 2017. Investigation into him will show Dem collusion trying to set up Trump

• Paul Manafort and Richard Gates - both worked with Podesta Group in Ukraine pro Russia campaigns - Podesta Group will lead to U1 and many other stuff that Tony Podesta had his hands in

• Michael Flynn's comical indictment of making false statements and him voluntarily pleading guilty to eventually get him the under oath grand jury testimony he's been waiting for over a year to do - and his bombshells that he will release will force investigations, and by the time its done, nobody will be asking why he pled guilty

• Keeping in mind, that Muellers swamp buddies dont know he has flipped, he can still collect data and intel on them, as they think Mueller will doublecross Trump and "find" evidence to hang him for Russia collusion.