No, he wouldn't. Google "snowden fair trial". He has always said that he is perfectly willing to come to the US and do exactly as you describe, if the government is willing to guarantee a fair trial. It isn't.
Go on, Google "snowden fair trial". Go do it. It's a key part of the story you're apparently unaware of. It'll take 5 seconds.
Sibling comment pointing out same: https://news.ycombinator.com/item?id=37401553