Actually, Snowden had plenty of choices. He could have raised the issue to the NSA IG, the DNI IG, or to his elected representative. He chose to expose a classified program in a way that is rife with mischaracterization and exploitation by people who want to damage the country. What he did is far from exposing the Clinton Administration placing a sweetheart deal for Tyson in their negotiations with Russia or China (diplomatic negotiation points are typically classified before the talks).