I say Snowden committed misprision of a felony up until he went public. See 18 USC 4
Whoever, having knowledge of the actual commission of a felony cognizable by a court of the United States, conceals and does not as soon as possible make known the same to some judge or other person in civil or military authority under the United States, shall be fined under this title or imprisoned not more than three years, or both.
The people are in civil and military authority as the Sovereigns of the country. If he did not do it the way he did it would have been swept under the rug.
Whoever, having knowledge of the actual commission of a felony cognizable by a court of the United States, conceals and does not as soon as possible make known the same to some judge or other person in civil or military authority under the United States, shall be fined under this title or imprisoned not more than three years, or both.
The people are in civil and military authority as the Sovereigns of the country. If he did not do it the way he did it would have been swept under the rug.