The govt should stay out of journalism: Remember who the government is supposed to be serving. In this case they clearly have such a huge conflict of interest that they should be recused from playing any role in making law about who is and isn't a journalist. If given a chance they would say that anyone who leaks on a member of Congress or the executive should go to jail, unless it happens to be a member of Congress or an employee of the executive, of course.
See how crazy this gets.
It gets worse.
We have a highly dysfunctional press, exemplified by reporters who want to debate the character of the leakers, instead of exploring what was revealed by the leaks. In such a world, we should be trying to expand the realm of people empowered to inform us about what our elected representatives are doing with the power we invest in them. Keep them on their toes and looking over their shoulders. Put a little of the fear they put in us in them.
Imho if the government says who's a journalist, under penalty of law, then there will be no journalism.