It's illegal to have unsecure classified information.
Comey did not say that she did not break the law. He said she would not be prosecuted for it.
Maybe you'll believe a libtard.
Yes, Hillary Clinton broke the law - New York Post
The law she broke was this law.
(a) of the statute: “(1) Whoever, being an officer, employee, contractor, or consultant of the United States, and, (2) by virtue of his office, employment, position, or contract, becomes possessed of documents or materials containing classified information of the United States, (3) knowingly removes such documents or materials (4) without authority and (5) with the intent to retain such documents or materials at an unauthorized location [shall be guilty of this offense].”
Hitlery's email server was a private and unprotected/unsecure/unauthorized location. Period. And she had classified information on it. That's against the law, dummy.