subsection (a): (1) The term identification document means a document made or issued by or under the authority of the United States Government, a State, or a political subdivision of a State which, when completed with information concerning a particular individual, is of a type intended or commonly accepted for the purpose of identification of individuals. (2) The term handgun includes any magazine for use in a handgun and any ammunition loaded into the handgun or its magazine. (f) (1) A person who possesses or carries a concealed handgun under subsection (a) shall not be subject to the prohibitions of section 922(q) with respect to that handgun. (2) A person possessing or carrying a concealed handgun in a State under subsection (a) may do so in any of the following areas in the State that are open to the public: (A) A unit of the National Park System. (B) A unit of the National Wildlife Refuge System. (C) Public land under the jurisdiction of the Bureau of Land Management. (D) Land administered and managed by the Army Corps of Engineers. (E) Land administered and managed by the Bureau of Reclamation. . (b) Clerical amendment The table of sections for such chapter is amended by inserting after the item relating to section 926C the following: 926D. Reciprocity for the carrying of certain concealed firearms. . (c) Severability Notwithstanding any other provision of this Act, if any provision of this section, or any amendment made by this section, or the application of such provision or amendment to any person or circumstance is held to be unconstitutional, this section and amendments made by this section and the application of such provision or amendment to other persons or circumstances shall not be affected thereby. (d) Effective date The amendments made by this section shall take effect 90 days after the date of the enactment of this Act.