Dorothe kearns Goodwin said the same thing recently in a documentary, so it most be in the latest liberal talking points fax.
Goodwin the plagiarizer for the left? Her credibility as a historian went down the tubes for all but the Democrats who worship plagiarizers, adulterers, and sexual predators.
here is a link to a page about the 2017 spielberg documentary in which this sentiment is expressed by fake plagiarist author doris kearns goodwin:
https://www.hbo.com/documentaries/spielberg