True, there have been calls from very senior USG officials to do just that though. Still the chance of that happening near 0 (but not exactly 0) especially given the frequency with which that particular charge is mode.
What senior USG official called for Snowden to be charged with treason? Remember, in our system of government, individual congresscritters aren't officials; they have extremely limited authority to do anything but contribute to the lawmaking process.
Remember, many of the noisest and most obnoxious people in Congress were elected by mere thousands of voters from American backwaters.
I don't quite follow the argument that those are not senior officials (the speaker of the house definitely qualifies as such, being second in line after the VP to be named President). The fact that people in a position like that are making such calls surely carries some weight with other, less senior officials and might sway a bunch of them to agree with it if only to not be seen as weak.
The thousands of voters from American backwaters collectively seem to command a rather large chunk of the legislative power in the USA.
Boehner was elected with something like 200,000 votes from Cincinattans. He can say the word "treason" until he's blue in the face, but on the question of what Snowden will be charged with, his words carry no more force than those of a Redstate.com blogger.
The numbers scale up a bit for Feinstein, who at least holds statewide office, but the end result is no different.
This isn't a fiddly technical point. The separation of powers between the Legislative and Executive branches is fundamental to our system of government. In cases where dingbat representatives try to rabble-rouse for unwarranted treason charges, you can see why the founders were smart to divest the Legislature of the power to enforce the laws they enact.
