1. Leaked only information about the NSA spying on Americans within the US.
2. Stayed within the US and faced the music.
Instead, he damaged America's ability to collect intelligence on foreign countries by revealing our capabilities, and then fled into the arms of our adversaries who have used him as a propaganda piece.
Our country exists with the freedom, prosperity, and influence we enjoy today because millions of men were willing to march to their deaths for it. Meanwhile, Snowden can't even face a jury of his peers for an act of civil disobedience? He must not think much of his cause.