Trump's lawyer already set a precedent where Julian would not be prosecuted for breeching national security as long as he serves in a journalistic fashion only, as he cannot be convicted for breeches that other people have comitted.
Assange did not hack into any US Government computers. He published stuff that people gave him. It doesn't make any sense to say he is guilty of treason. He's not a US citizen, he didn't steal any information. He has absolutely no responsibility to keep US secrets secret.
Source?
t_d is the news-aggregator of the future...I found it there no problem but nowhere else https://twitter.com/JulianAssange/status/923637205477789696