Is prosecution underway? Much of what you mention is surely illegal, even in the US.
For calling for Hillary's and Obama's assassination? The Secret Service investigated and determined that it would be too difficult to prosecute in the absence of someone actually taking Jones up on the offer. (If someone had, we wouldn't be having this discussion right now--he'd be serving life in a SuperMax for conspiracy.)
Pure speculation, and unlikely at that. There were dozens of assassination attempts against past presidents, not once has anyone been imprisoned for allegedly inciting the attempt.
This comment, and your previous one as well, are trying to criminalize acts of speech that are protected by the First Amendment.
Which is why there are no current criminal proceedings against Jones.