When Snowden worked for the CIA, who are infested with more traitors than the NSA, he didn't release any evidence exposing CIA traitors. Why do you think that is? Given that Snowden had the perfect opportunity to expose CIA traitors, but chose not to, where do you think Snowden's loyalties lie?

Remember, Admiral Rogers (NSA Director at the time) went to meet with President Trump during the 2016 transition to warn him that Obama was spying on him. When Admiral Rogers (NSA Director) found out that CIA contractors were abusing NSA tools to spy on people, he removed their authorization and stopped those CIA contractors from spying any longer.

Snowden was a puppet in the power battle between the CIA and the NSA. Snowden's loyalty is to the traitors in the CIA. If he agrees to flip and provide evidence against the anti-American traitors in the CIA, then fair enough give him a degree of leniency. But he won't flip, because Snowden is loyal to his traitorous CIA 'former' bosses.