Amend SB 1879 on third reading by adding the following appropriately numbered SECTIONS to the bill and renumbering subsequent SECTIONS of the bill accordingly: SECTION ____. Section 481.121, Health and Safety Code, is amended by adding Subsections (c) and (d) to read as follows: (c) It is an affirmative defense to prosecution under Subsection (a) for the possession of marihuana that the person possessed the marihuana as a patient of a physician licensed to practice medicine in this state pursuant to the recommendation of that physician for the amelioration of the symptoms or effects of a bona fide medical condition. (d) An agency, including a law enforcement agency, of this state or a political subdivision of this state may not initiate an administrative, civil, or criminal investigation into a physician licensed to practice medicine in this state on the ground that the physician discussed marihuana as a treatment option with a patient of the physician or made a written or oral statement that, in the physician's opinion, the potential benefits of marihuana would likely outweigh the health risks for a particular patient. SECTION ____. Subchapter B, Chapter 164, Occupations Code, is amended by adding Section 164.0525 to read as follows: Sec. 164.0525. MEDICAL USE OF MARIHUANA. A physician may not be denied any right or privilege or be subject to any disciplinary action solely for making a written or oral statement that, in the physician's professional opinion, the potential benefits of marihuana would likely outweigh the health risks for a particular patient. SECTION ____. The change in law made by this Act to Section 481.121, Health and Safety Code, applies only to an offense committed on or after the effective date of this Act. An offense committed before the effective date of this Act is covered by the law in effect when the offense was committed, and the former law is continued in effect for that purpose. For purposes of this section, an offense was committed before the effective date of this Act if any element of the offense was committed before that date.