And how would you react if this idea was floated by Obama, Clinton, Reid, or Pelosi? See, the problem with changing a law to benefit someone you trust is it's also changed for someone you can't trust. Denying someone the freedom to call Trump a new Mussolini (an opinion, by the way, that I don't share. He reminds me much more of Juan Peron) means the freedom to call Hillary Clinton a criminal psychotic power hungry neo-Stalinist ugly shrew would also be subject to legal sanction. Any speculation about Harry Reid's ties to organized crime would be libelous. And mention Obama's frolics in Chicago bathhouses? Forget it.
To paraphrase the old saying about God and killing in combat, allow it all to be said and let the listeners sort it out.