Clear destruction of evidence and obstruction of justice.
Until now, Hillary has maintained that the e mail servers were located at a Clinton residence and were secured by the Secret Service.
This has now been shown to be a lie.
The server was never under Secret Service protection and it does not seem like the New Jersey based IT company had either the proper Government Top Secret security clearance to manage the servers, or a US government approved security system to allow them to have such highly classified information in their possession at their business site.
It goes without saying that the servers were not secured and pretty much any garden variety hacker could hack into the system and in fact one in Eastern Europe, by the name of Guccifer did just that while Clinton was Sec of State.
If an amateur working from a PC could hack her system, it is a 100% certainty that just about every foreign intelligence agency in the world read Hillary's emails, probably before before Hillary herself read them, given their access to professional Cyber Warfare tools, professional Cyber Warfare operatives and expert cryptologists