To amend the Internal Revenue Code of 1986 to allow businesses to expense qualified security devices.

Summary: Public Safety and Protection Investment Act of 2005 - Amends the Internal Revenue Code to allow individual and corporate taxpayers to expense (i.e., claim a full tax deduction in the current taxable year) the costs of purchasing and installing certain qualifying security devices.

SECTION 1. SHORT TITLE.

    This Act may be cited as the ``Public Safety and Protection 
Investment Act of 2005''.

SEC. 2. BUSINESS DEDUCTION FOR PURCHASE AND INSTALLATION OF SECURITY 
              DEVICES.

    (a) In General.--Part VI of subchapter B of chapter 1 of the 
Internal Revenue Code of 1986 (relating to itemized deductions for 
individuals and corporations) is amended by inserting after section 
179B the following new section:

``SEC. 179C. SECURITY DEVICE PURCHASES.

    ``(a) Allowance of Deduction.--A taxpayer may elect to treat the 
cost of any qualifying security device as an expense which is not 
chargeable to capital account. Any cost so treated shall be allowed as 
a deduction for the taxable year in which such device is placed in 
service.
    ``(b) Definitions.--For purposes of this section--
            ``(1) Qualifying security device.--The term `qualifying 
        security device' means a security device (to which section 168 
        applies) which is acquired by purchase (as defined in section 
        179(d)(2)) and which is installed or placed in service in a 
        building which is owned or occupied by the taxpayer and which 
        is located in the United States.
            ``(2) Security device.--The term `security device' means 
        any of the following:
                    ``(A) An electronic access control device or 
                system.
                    ``(B) Biometric identification or verification 
                device or system.
                    ``(C) Closed-circuit television or other 
                surveillance and security cameras and equipment.
                    ``(D) Locks for doors and windows, including 
                tumbler, key, and numerical or other coded devices.
                    ``(E) Computers and software used to combat 
                cyberterrorism.
                    ``(F) Electronic alarm systems to provide detection 
                notification and off-premises transmission of an 
                unauthorized entry, attack, or fire.
                    ``(G) An electronic device capable of tracking or 
                verifying the presence of assets.
                    ``(H) High efficiency air filtering systems.
                    ``(I) Mechanical and non-mechanical vehicle 
                arresting barricades.
                    ``(J) Metal detectors.
                    ``(K) Signal repeating devices for emergency 
                response personnel wireless communication systems.
                    ``(L) Components, wiring, system displays, 
                terminals, auxiliary power supplies, computer systems, 
                software, networking infrastructure and other equipment 
                necessary or incidental to the operation of any item 
                described in any of the preceding subparagraphs.
            ``(3) Building.--The term `building' includes any structure 
        or part of a structure used for commercial, retail, or business 
        purposes.
    ``(c) Special Rules.--
            ``(1) Basis reduction.--For purposes of this subtitle, if a 
        deduction is allowed under this section with respect to the 
        purchase of a qualifying security device, the basis of such 
        device shall be reduced by the amount of the deduction so 
        allowed.
            ``(2) Certain rules to apply.--Rules similar to the rules 
        of section 179(b)(3), section 179(c), and paragraphs (3), (4), 
        (8), and (10) of section 179(d), shall apply for purposes of 
        this section.''.
    (b) Conforming and Clerical Amendments.--
            (1) Section 263(a)(1) of such Code is amended by striking 
        ``or'' at the end of subparagraph (H), by striking the period 
        at the end of subparagraph (I) and inserting ``, or'', and by 
        inserting after subparagraph (I) the following new 
        subparagraph:
                    ``(J) expenditures for which a deduction is allowed 
                under section 179C.''.
            (2) Section 312(k)(3)(B) of such Code is amended by 
        striking ``or 179B'' each place it appears in the heading and 
        text and inserting ``179B, or 179C''.
            (3) Section 1016(a) of such Code is amended by striking 
        ``and'' at the end of paragraph (30), by striking the period at 
        the end of paragraph (31) and inserting ``, and'', and by 
        inserting after paragraph (31) the following new paragraph:
            ``(32) to the extent provided in section 179C(d)(1),''.
            (4) Section 1245(a) of such Code is amended by inserting 
        ``179C,'' after ``179B,'' both places it appears in paragraphs 
        (2)(C) and (3)(C).
            (5) The table of sections for part VI of subchapter B of 
        chapter 1 of such Code is amended by inserting after the item 
        relating to section 179B the following new item:

``Sec. 179C. Security device purchases.''.
    (c) Effective Date.--The amendments made by this Act shall apply to 
taxable years ending after the date of the enactment of this Act.