Former Camp David Historian and Presidential Chaplain Charles Ferguson, author of "Presidential Seclusion: The Power of Camp David," talks about the history of the U.S. presidential retreat and its recreational and diplomatic uses. Located in Catoctin Mountain Park in Maryland, roughly 60 miles outside of Washington, DC, the 180-acre facility, with a dozen cabins and a Naval base, has, since 1942, hosted presidents from FDR to Trump, their families, and numerous foreign dignitaries.

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