i agree with Sam and Brad. Mr. Assange has been on everyone's radar for quite some time now. if there was an easy way to lock him up, i'm sure the DOJ would have taken action by now.
it may not be the type of journalism that you're used to, but it is journalism. it is the release of information to the public, and honestly with far less opinionated bias than most other media sources.
also....to echo what Sam said. we absolutely have the right, and the duty, to insist that nations obey their own laws. we have just been force-fed so much propaganda for so long that it no longer angers the common person when the politicians or the super-wealthy elite reinvent laws to suit their own whims.
last but not least...i want to reiterate that, even if the Espionage Act was applicable (i don't think it is, but i'm not a lawyer), the overwhelming majority of paragraphs in its text specifically state that it is only operative in times of war. and the politicians have for many decades now been reaping the benefits of never making formal declarations of war.