Adjusts the boundary of the Palo Alto Battlefield National Historical Park in Texas to include the approximately 166.44 acres of land…

Section 3(b)(2) of the Palo Alto Battlefield National Historic Site Act of 1991 (16 U.S.C. 410nnn–1(b)(2)) is amended—

(1) by amending subparagraph (A) to read as follows:

(i) In addition to the land described in paragraph (1), the historical park shall consist of—

(I) the approximately 34 acres of land, as generally depicted on the map entitled Palo Alto Battlefield NHS Proposed Boundary Expansion, numbered 469/80,012, and dated May 21, 2008; and

(II) on the date that such land is donated to the United States, the approximately 166.44 acres of land generally depicted on the map entitled PALO ALTO BATTLEFIELD NATIONAL HISTORICAL PARK Proposed Boundary Addition, Fort Brown Unit, numbered 469/143,589, and dated April 2018.

(ii) Before accepting any donated land described in this subparagraph, the Secretary shall complete a boundary study analyzing the feasibility of adding the land to the national historical park.

(iii) If a boundary study completed under clause (ii) finds that acceptance of the donated land is feasible and appropriate, the Secretary may accept such land and administer the land as part of the historical park after providing notice of such finding to Congress.; and

(2) in subparagraph (B)—

(A) in the heading, by striking map and inserting maps; and

(B) by striking map and inserting maps.

Section 3(b)(3) of the Palo Alto Battlefield National Historic Site Act of 1991 (16 U.S.C. 410nnn–1(b)(3)) is amended by striking after and all that follows through Secretary of the Interior and inserting after the addition of lands to the historic park boundary, the Secretary of the Interior.