No, he thinks lying about public figures should not be protected as it is since 1964.
Do you know how many people here on FR could end up being sued every time they repeated some criticism about some politician or other public figure.
But it is often necessary to repeat such information in order to start the debate on proving or disproving the information. When people fear starting a discussion then there will be no search for the truth.
Most people are smart enough to know that Allegations against politicians are a dime a dozen, and need to be proved before taken seriously.
Now if you can prove that allegation was made while the perpetrator knew it was false. Then that might be different.