I'm in favor of prosecuting Snowden because he did substantial and potentially permanent damage to our intelligence gathering abroad.
> There’s no such thing as a whistleblower without evidence, that’s called a parish who gets ignored.
He could have gathered information, contacted appropriate members of the Senate, and launched an investigation such as the Church committee (https://en.wikipedia.org/wiki/Church_Committee).
> Are you all also in favour of prosecuting the journalists who publish this material?
That depends on what they publish and whether it's determined to be illegal. Hopefully the courts would allow publication as in the Pentagon Papers case (https://en.wikipedia.org/wiki/Pentagon_Papers#The_Supreme_Co...).