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          A BILL TO BE ENTITLED
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          AN ACT
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        relating to the enforcement of certain federal laws regulating  | 
      
      
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        firearms, firearm accessories, and firearm ammunition within the  | 
      
      
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        State of Texas. | 
      
      
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               BE IT ENACTED BY THE LEGISLATURE OF THE STATE OF TEXAS: | 
      
      
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               SECTION 1.  Chapter 1, Penal Code, is amended by adding  | 
      
      
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        Section 1.10 to read as follows: | 
      
      
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               Sec. 1.10.  ENFORCEMENT OF CERTAIN FEDERAL LAWS REGULATING  | 
      
      
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        FIREARMS, FIREARM ACCESSORIES, AND FIREARM AMMUNITION.  (a)  In  | 
      
      
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        this section: | 
      
      
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                     (1)  "Firearm" has the meaning assigned by Section  | 
      
      
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        46.01. | 
      
      
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                     (2)  "Firearm accessory" means an item that is used in  | 
      
      
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        conjunction with or mounted on a firearm but is not essential to the  | 
      
      
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        basic function of a firearm.  The term includes a detachable firearm  | 
      
      
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        magazine. | 
      
      
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               (b)  An agency of this state or a political subdivision of  | 
      
      
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        this state, and a law enforcement officer or other person employed  | 
      
      
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        by an agency of this state or a political subdivision of this state,  | 
      
      
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        may not contract with or in any other manner provide assistance to a  | 
      
      
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        federal agency or official with respect to the enforcement of a  | 
      
      
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        federal statute, order, rule, or regulation purporting to regulate  | 
      
      
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        a firearm, a firearm accessory, or firearm ammunition if the  | 
      
      
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        statute, order, rule, or regulation imposes a prohibition,  | 
      
      
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        restriction, or other regulation, such as a capacity or size  | 
      
      
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        limitation or a registration requirement, that does not exist under  | 
      
      
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        the laws of this state. | 
      
      
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               (c)  Subsection (b) does not apply to a contract or agreement  | 
      
      
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        to provide assistance in the enforcement of a federal statute,  | 
      
      
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        order, rule, or regulation in effect on August 31, 2017, that  | 
      
      
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        pertains to border security. | 
      
      
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               (d)  A political subdivision of this state may not receive  | 
      
      
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        state grant funds if the political subdivision adopts a rule,  | 
      
      
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        order, ordinance, or policy under which the political subdivision  | 
      
      
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        requires the enforcement of any federal statute, order, rule, or  | 
      
      
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        regulation described by Subsection (b) or, by consistent actions,  | 
      
      
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        requires the enforcement of any federal statute, order, rule, or  | 
      
      
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        regulation described by Subsection (b).  State grant funds for the  | 
      
      
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        political subdivision shall be denied for the fiscal year following  | 
      
      
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        the year in which a final judicial determination in an action  | 
      
      
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        brought under this section is made that the political subdivision  | 
      
      
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        has intentionally required the enforcement of any federal statute,  | 
      
      
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        order, rule, or regulation described by Subsection (b). | 
      
      
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               (e)  Any citizen residing in the jurisdiction of a political  | 
      
      
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        subdivision of this state may file a complaint with the attorney  | 
      
      
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        general if the citizen offers evidence to support an allegation  | 
      
      
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        that the political subdivision has adopted a rule, order,  | 
      
      
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        ordinance, or policy under which the political subdivision requires  | 
      
      
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        the enforcement of any federal statute, order, rule, or regulation  | 
      
      
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        described by Subsection (b) or that the political subdivision, by  | 
      
      
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        consistent actions, requires the enforcement of any federal  | 
      
      
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        statute, order, rule, or regulation described by Subsection (b).   | 
      
      
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        The citizen must include with the complaint the evidence the  | 
      
      
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        citizen has that supports the complaint. | 
      
      
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               (f)  If the attorney general determines that a complaint  | 
      
      
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        filed under Subsection (e) against a political subdivision of this  | 
      
      
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        state is valid, the attorney general may file a petition for a writ  | 
      
      
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        of mandamus or apply for other appropriate equitable relief in a  | 
      
      
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        district court in Travis County or in a county in which the  | 
      
      
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        principal office of the political subdivision is located to compel  | 
      
      
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        the political subdivision to comply with Subsection (b).  The  | 
      
      
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        attorney general may recover reasonable expenses incurred in  | 
      
      
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        obtaining relief under this subsection, including court costs,  | 
      
      
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        reasonable attorney's fees, investigative costs, witness fees, and  | 
      
      
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        deposition costs. | 
      
      
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               (g)  An appeal of a suit brought under Subsection (f) is  | 
      
      
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        governed by the procedures for accelerated appeals in civil cases  | 
      
      
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        under the Texas Rules of Appellate Procedure.  The appellate court  | 
      
      
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        shall render its final order or judgment with the least possible  | 
      
      
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        delay. | 
      
      
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               (h)  The attorney general shall defend any agency of this  | 
      
      
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        state that the federal government attempts to sue for an action or  | 
      
      
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        omission consistent with the requirements of this section. | 
      
      
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               SECTION 2.  This Act takes effect immediately if it receives  | 
      
      
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        a vote of two-thirds of all the members elected to each house, as  | 
      
      
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        provided by Section 39, Article III, Texas Constitution.  If this  | 
      
      
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        Act does not receive the vote necessary for immediate effect, this  | 
      
      
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        Act takes effect September 1, 2017. |