We need to pass a law called the “We will F*** you up if we catch you lying act” for “Journalists” who are caught lying.
No we don’t.
Free Speech (and freedom of the press) means nothing if you can legally shut down something you don’t like.
Look at the UK. They have such laws. And they are not being used as you would want. They are being used to silence critics of the government. That is the way these laws always turn out.
So you do what President Trump does - point to the members of the media and call them liars and fake news.
I've had this debate several dozen times. Freedom of Speech is indeed one of the most important rights protected by our constitution, and now I ask you for a moment to consider what is the purpose of this "Freedom of Speech" right? Why do we have it?
Why did the founders create it, and why did they deem it so essential?