Then in fourth grade english he should have said...Example.
Trump said of Harris, "...She really is a Marxist."
People call that a lie. Some will say it is false.
But it's neither. It just Trump's opinion.
'In my opinion, she is really a marxist...' or 'I think she is really a Marxist...'
What he was saying was a statement of fact....
He is the difference
Statement of fact:
Donald Trump is a convicted criminal.
Statement of Opinion:
I think Donald Trump is worst President in US modern history.