Relating to the possession of firearms in certain public areas.

Authorizes the governing bodies of certain public entities that own or control public buildings to adopt a policy, ordinance or regulation limiting the affirmative defense for concealed handgun licensees for the crime of possessing a firearm in a public building. Provides that in a prosecution for possessing a firearm in a building or on grounds subject to such a policy, ordinance or regulation, the concealed handgun licensee affirmative defense is not a complete defense, but results in a Class A misdemeanor conviction punishable by 364 days' imprisonment, $6,250 fine, or both.