[SubMareener]

You are not paying attention. If you are a “public figure” you have to prove actual malice when bringing a libel suit. If you are not a “public figure” then all you have to do is prove that the article was false, they knew it was false and it hurt your reputation. What Donald Trump is proposing that there be only one standard for libel, so that the libel laws are no respecters of person, i.e., that the libel laws apply equally to all persons. A very conservative idea in my opinion.

Here is hollywood’s analysis of the situation:
Absence of Malice
Paul Newman (Actor), Sally Field (Actor), Sydney Pollack (Director)

[builder]

I think I am paying attention.
If Trump gets his way ,and he is a public figure and judge Alito is a public figure. Then when Trump said in the debate three times that Judge Alito signed the same bill that his sister did - then that was a knowingly false statement intended to harm.
Should he be successfully sued for that?
His proposed change in libel law would allow it.