If you remember it started with Michael Flynn.  Ironically it was Obama that warned Trump to not hire him.  It's always the cover-up, and that is what Trump has been doing.  Never before in this nations history was a President inept/incompetent enough to make enemies out of the 3 most powerful agencies in this country. The media, our intelligence agencies, and now the DOJ.  The more he says the media is FAKE, the more they will write & report.  The more he says Russia is just a ruse, the more he implicates himself into a coverup and the deeper they will dig.  When he attacks Comey and now Rod Rosenstein, the more the DOJ will leak. Here is Trump on NBC News admitting Obstruction of Justice.  While he personally wasn't under investigation, he is now.
http://www.nbcnews.com/news/us-news/trump-reveals-he-asked-comey-whether-he-was-under-investigation-n757821