Yosemite National Park Boundary Expansion Act of 2012 - Authorizes the Secretary of the Interior to acquire the approximately 1,575 acres of identified land that is adjacent to Yosemite National Park in California for addition to the Park.
Permits an acquisition of such land to be made by donation, purchase from a willing seller, or exchange and revises the boundary of the Park to reflect the acquisition.
Requires the Secretary to administer any acquired land as part of the Park.