File charges against the 47 U.S. Senators in violation of The Logan Act in attempting to undermine a nuclear agreement is the Whitehouse petition that is gathering the signatures. It has over 260,000 as I write this post. It only needed 100,000 signatures within 30 days to cross the second threshold and require a response. April 8 is the deadline.
The concluding sentence:
This is a clear violation of federal law. In attempting to undermine our own nation, these 47 senators have committed treason.
may be a little overdone, but if you want your signature to really count, then I think this is the petition to sign.