Hint: The biggest political scandal in American history.
You have a short grasp of history. But if you mean the ongoing investigation into Russian meddling in our election and potential involvement of members of the Trump campaign - here is how justice works (for those that don't have a clue).
First, there has to be evidence of a crime committed. Then follows an investigation, people are indicted and charged. Then there is a trial (or plea bargain) and then - if guilty - sentencing.
So far - a handful of people have been charged/found guilty/undergoing trial. Chief among them Flynn, Manafort, Page. The investigation is ongoing. When it concludes we shall see if "justice" has been served. This is not done in the court of public opinion where you don't have access to all the information and more and more people seem to be relying on opinion over facts (of which there aren't a lot available).