Clinton knowingly broke various long standing US laws.  Not only could thousands of emails have been "hacked", they could not be accessed by the public through Freedom of Information Act requests.  People may not realize, but those emails do not belong to Ms. Clinton herself - she worked for a public office and those emails belonged to the citizens of the USA.  Moreover, she then vetted and destroyed or, had her staff vet and destroy, thousands of emails.  That specific decision was not up to Ms. Clinton; again, she worked for the people of the USA.  When Donald Trump stated that she should be in jail - he may have been getting ahead of himself - as that is not his call; however, a more thorough investigation definitely needs to be conducted.  Also, any government officials that received emails about official US government business from an email address that was not secure should have also posed a question and followed up on the issue immediately.  Ignorance of the law is no excuse.