"Trump says he is not involved in that decision-making process, but would support Attorney General Jeff Sessions if he charged Assange with a crime."

"He added: “So yes, it is a priority. We’ve already begun to step up our efforts and whenever a case can be made, we will seek to put some people in jail.”

Here's quotes from both your links to the Trump administration, Trump used the word "crime", meaning they have to find evidence that a crime was committed. All other quotes are by "unnamed" sources, same sources that want to disparage the current administration.

Same with the quote from Sessions. He spoke in generalities of all leaking, and again in cases where evidence of a crime has been committed.

I think what is happening here is that the very same media that you complain doesn't allow for the truth is also part of the propaganda machine being used to help Assange self contain himself. Assange is at this point in place they can't put him, locked and sealed. That's why the administration is saying if evidence of a crime has been committed then yes, they aren't saying they found evidence of a crime, media is just interrupting it that way to scare Assange into staying self contained.