; and (B) plans. (c) Donations (1) In general The Secretary may accept and use donated funds, property, in-kind contributions, and services to carry out this subtitle. (2) Prohibition The Secretary may not use the authority provided by paragraph (1) to accept non-Federal land that has been acquired after the date of the enactment of this Act through the use of eminent domain. (d) Cooperative agreements In carrying out this subtitle, the Secretary may make grants to, or enter into cooperative agreements with, units of State, Tribal, and local governments and private entities to conduct research, develop scientific analyses, and carry out any other initiative relating to the management of, and visitation to, the Recreation Area. B San Gabriel Mountains 321. Definitions In this subtitle: (1) Secretary The term Secretary means the Secretary of Agriculture. (2) Wilderness area or addition The term wilderness area or addition means any wilderness area or wilderness addition designated by section 323(a). 322. National monument boundary modification (a) In general The San Gabriel Mountains National Monument established by Presidential Proclamation 9194 ( 54 U.S.C. 320301 note) (referred to in this section as the Monument ) is modified to include the approximately 109,167 acres of additional National Forest System land depicted as the Proposed San Gabriel Mountains National Monument Expansion on the map entitled Proposed San Gabriel Mountains National Monument Expansion and dated June 26, 2019. (b) Administration The Secretary shall administer the San Gabriel Mountains National Monument, including the lands added by subsection (a), in accordance with— (1) Presidential Proclamation 9194, as issued on October 10, 2014 ( 54 U.S.C. 320301 note); (2) the laws generally applicable to the Monument