Experts in government secrecy law see almost no possibility of criminal action against Hillary Clinton or her top aides in connection with now-classified information sent over unsecure email while she was secretary of state, based on the public evidence thus far.

Some Republicans, including leading GOP presidential candidate Donald Trump, have called Clinton’s actions criminal and compared her situation to that of David Petraeus, the former CIA director who was prosecuted after giving top secret information to his paramour. Others have cited the case of another past CIA chief, John Deutch, who took highly classified material home.