Jailing leakers like Assange, Snowden, and Bradley is an affront to First Amendment absolutism the American establishment is used to.
That is to say, it is blatantly unconstitutional, but widely supported on the left but especially on the right.
Jailing journos is not, though it is accepted in other leading Western nations like Britain and France.
Of course, Trump's advocacy of a change in this matter was and is entirely motivated by a desire to cover up his and his administration's nefarious, foolish, or absurd doings and take vengeance on those who expose them.
But it is in itself a good idea.
Though the journos don't think so, of course.
In effect, they are the only people besides the President of the United States who can with impunity share national defense secrets with the enemy and get away with it.
And they have done so quite annoyingly often.
The Trump news you missed: he asked Comey to jail journalists
The Espionage Act