48 U.S.C. § 748 : US Code - Section 748: Conveyance by President to people of lands, buildings, etc.

Search 48 U.S.C. § 748 : US Code - Section 748: Conveyance by President to people of lands, buildings, etc.

The President may, from time to time, in his discretion, convey
to the people of Puerto Rico, such lands, buildings, or interests
in lands, or other property now owned by the United States, and
within the territorial limits of Puerto Rico as in his opinion are
no longer needed for purposes of the United States. And he may from
time to time accept by legislative grant from Puerto Rico any
lands, buildings, or other interests or property which may be
needed for public purposes by the United States.