Carl Bernstein, whose reporting broke open the Watergate scandal that led to former President Nixon's resignation, said Sunday that Nixon's lies were nothing compared to Donald Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE's.

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"Trump lives and thrives in a fact-free environment. No president, including Richard Nixon, has been so ignorant of fact and disdains fact in the way this president-elect does," Bernstein said on CNN's "Reliable Sources."

Bernstein also slammed what he called a "growing sense of authoritarianism" from Trump and his campaign.

"Richard Nixon was nothing, in terms of lying, compared to what we have seen from Donald Trump," he said.