To expand the boundary of the Jimmy Carter National Historic Site in the State of Georgia, to redesignate the unit as a National Historical Park, and for other purposes.

Redesignates the Jimmy Carter National Historic Site in Georgia as the Jimmy Carter National Historical Park.

Requires, in the administration of the Historical Park, the preservation and interpretation of a southern agricultural-based rural community during the early to middle years of the 20th century.

Adds specified real property needed to enhance the visitor experience at the site, including additional acreage surrounding the boyhood home of former President Jimmy Carter.

Authorizes the acquisition, by donation only, of: (1) other lands and interests in the environs of Plains, Georgia, containing natural, cultural, or historic resources consistent with the purposes of the Park; and (2) the Georgia Welcome Center on State Route 280/27.