Presidential historian says wait 40 years to judge presidents

Description

C-SPAN's "America's Book Club" — Michael Beschloss, a presidential historian, gave examples on why 30 or 40 years are necessary to obtain real hindsight on a president.

"If you wrote a book about LBJ before the tapes, and then after the tapes, after you hear what he's really like in private, it's like two different human beings," he said.

Watch the full interview, filmed at the Decatur House, SUNDAY at 6pm and 9pm ET/PT on C-SPAN

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