Barr and Rosenstein put that out because the whole investigation was into collusion and obstruction of justice. There wasn't enough to indict on either. It also stated that it had nothing to do with the "sitting president" issue. There wasn't enough to indict. Period. All the rest of the report needs to be redacted. The people who wanted the whole report made public with no redactions, was just a political stunt. They know it would be illegal to release grand jury testimony to the public . Nadler was furious when the Starr report was released. He's arguing just the opposite today. The democrats want to use the Mueller report for opposition research. Everybody knows it. Let the games begin. Barrs summary itself shouldn't be doubted at all. What was there to be gained by lying on the summary? Does anybody believe Bob Mueller would just remain silent if he said there was collusion? And obstruction of justice? Enough to indict? I doubt it.
With 500 wittiness statements and 2 years of combing through testimony and documents, there's sure to be some embarrassing info on Trump. No doubt. That's what it's about. Finding something , anything. Now they are going after his taxes, his family, friends, and anything they can. Even if they don't nail him before he finishes his term, and even if he is re-elected, that's not what this is about. This is about showing any other outsider, that isn't a life long politician, the kind of treatment they will get if they think about running for POTUS. Think about it. Trump is a family business, with hundreds if not thousands of employees all over the world. The life long politician, well, they live off us. Nothing to hide. They've already hidden any skeletons decades ago. Yes my friends, that what this is about. That's why there were plenty of opponents/never Trumpers on both sides of the aisle. To many secrets and sweetheart deals in congress. Think of it, would we even know about the "slush fund" to pay of women in congress for all those years if Trump hadn't entered the race? Think about it.