; and (2) subject to such terms and conditions as are mutually satisfactory to the Secretary and the Post, including such additional terms and conditions as the Secretary considers to be appropriate to protect the interests of the United States. (g) Valid existing rights The exchange of Federal land and non-Federal land authorized under this section shall be subject to valid existing rights. (h) Title approval Title to the Federal land and non-Federal land to be exchanged under this section shall be in a form acceptable to the Secretary. (i) Treatment of acquired land Any non-Federal land and interests in non-Federal land acquired by the United States under this section shall be administered by the Secretary as part of the Gulf Islands National Seashore. (j) Modification of boundary On completion of the exchange of Federal land and non-Federal land under this section, the Secretary shall modify the boundary of the Gulf Islands National Seashore to reflect the exchange of Federal land and non-Federal land. 7134. Ste. Genevieve National Historical Park (a) Definitions In this section: (1) Historic district The term Historic District means the Ste. Genevieve Historic District National Historic Landmark, as generally depicted on the Map. (2) Historical Park The term Historical Park means the Ste. Genevieve National Historical Park established by subsection (b). (3) Map The term Map means the map entitled Ste. Genevieve National Historical Park Proposed Boundary , numbered 571/132,626, and dated May 2016. (4) Special resource study The term special resource study means the study entitled Ste. Genevieve Final Special Resources Study and Environmental Assessment, Missouri and dated May 2016. (5) State The term State means the State of Missouri. (b) Establishment (1) In general Subject to paragraph (2), there is established the Ste. Genevieve National Historical Park in the State as a unit of the National Park System to preserve, protect, and interpret for the benefit of present and future generations the themes of