"(2)(A) It shall be unlawful for any individual knowingly to
possess a firearm that has moved in or that otherwise affects
interstate or foreign commerce at a place that the individual
knows, or has reasonable cause to believe, is a school zone.
"(B) Subparagraph (A) does not apply to the possession of a
firearm--
"(i) on private property not part of school grounds;
"(ii) if the individual possessing the firearm is licensed to
do so by the State in which the school zone is located or a
political subdivision of the State, and the law of the State or
political subdivision requires that, before an individual obtains
such a license, the law enforcement authorities of the State or
political subdivision verify that the individual is qualified under
law to receive the license;
"(iii) that is--
"(I) not loaded; and
"(II) in a locked container, or a locked firearms rack that is
on a motor vehicle;