(This measure has not been amended since it was introduced. The summary has been expanded because action occurred on the measure.)
Grand Teton National Park Extension Act of 2007 - Authorizes the Secretary of the Interior to: (1 ) accept from any willing seller the donation of any land or interest in land of the GT Park Subdivision; and (2) upon acquisition of land or an interest, include the land or interest in the boundaries of Grand Teton National Park and administer the land or interest as part of the Park.
States that it is the intent of Congress that the acquisition of land or an interest be completed not later than one year after enactment of this Act.
Prohibits the Secretary from donating, selling, exchanging, or otherwise transferring any land acquired under this Act without express authorization from Congress.
Authorizes appropriations.