He was appointed by POTUS But... Has deep ties to the Bush's and the Clintons. He Served as Counsel to the Deputy Attorney General for the Clinton Administration, and In 2005, President George W. Bush nominated Rosenstein as the U.S. Attorney for the United States District Court for the District of Maryland, a position he maintained during the Obama administration. Rosenstein recommended to POTUS that he fire James Comey, and PUTUS did just that. Rosenstein used that as a pretense to appoint Mueller as a special prosecutor.  The crazy part is that Rosenstein let loose the dogs on POTUS. Mueller was NOT restricted into looking at Russian Collusion, but gave him the leaway to look anywhere, at anything, about anything. Backwards from how it is supposed to work. Instead of having a specific crime investigated, they were free to look for any crime about anything with no evidence of a crime at all.  The "Russian Collusion" Hoax was a fabricated hit job financed by Hillary Clinton. The money trail goes from the Clinton Campaign, to Perkins Cole (Clinton campaign and the Democratic National Committee paid for the creation of a dossier of scandalous claims about President Donald Trump.) Who hired Fusion GPS, a Washington firm, to conduct the research, who hired Christopher Steele, Who Gave that information to the FBI and the press. The Russian Dossier was a fabricated hit job, bought and paid for by the Clinton Campaign.   Rosenstein KNEW that it didn't pass the smell test, and signed off on it anyway presenting it to FISC to get a FISA warrant to surveil.   The goal is to get rid of POTUS literally By Any Means Necessary. Rosenstein has some evil bedfellows in this plot. It is a coup. By any means necessary INCLUDES Obstruction of Justice. Even though POTUS is innocent in all this, if he were to outright FIRE comey, the press and everyone would be screaming "OBSTRUCTION." He will go bye bye, but it has to be in a way where POTUS is insulated. Impeachment by congress, is one way, but there are many.