I assume Sanders has just rolled over this as he has Benghazi, emails and subpoenas. He's not a serious candidate.
Sanders is not going to get traction unless he goes after her like I am sure Trump WILL.
It's going to be Clinton versus Trump, and he will bury her.
In my opinion, no other GOP candidate is going to do that, and unless Trump gets the GOP nomination, I am fearful Clinton will handily beat Cruz, Rubio, Bush or any of the other candidates.
All except Trump are lightweights on AMNESTY compared to Trump, and all will be lightweights in the same manner against Hillary.