"Some are true and some are false. Some are old and some are new," Trump said.
"There is no recovery for someone falsely accused - life and career are gone. Is there no such thing any longer as Due Process?" he said.
However, Trump had said that Porter's departure was "very sad" and "he did a very good job while he was in the White House.
Sorensen resigned this week after being accused of domestic abuse by his ex-wife. He had denied the allegations and alleged that he "was the victim of repeated physical violence" during his marriage.
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