As [this article][1] states: 

> "Cox said the fact that Clinton’s staff -- rather than a State
> Department federal records officer -- chose which emails to destroy is
> "honestly breathtaking." Her private employees don’t have the
> authority to decide what does or doesn’t count as a federal record."

So why did Hilary Clinton's staff get to decide what emails to send to the FBI? Why didn't the FBI just get a warrant to retrieve these emails?

  [1]: http://www.politifact.com/truth-o-meter/article/2015/mar/12/hillary-clintons-email-did-she-follow-all-rules/