; and inserting research, including data collection, relating to— (A) the causes, mechanisms, prevention, diagnosis, and treatment of injuries, including with respect to gun violence; and (B) rehabilitation from such injuries; ; and (2) by adding at the end the following new subsection: (c) No advocacy or promotion of gun control Nothing in this section shall be construed to— (1) authorize the Secretary to give assistance, make grants, or enter into cooperative agreements or contracts for the purpose of advocating or promoting gun control; or (2) permit a recipient of any assistance, grant, cooperative agreement, or contract under this section to use such assistance, grant, agreement, or contract for the purpose of advocating or promoting gun control. . (b) Authorization of appropriations Section 394A(a) of the Public Health Service Act ( 42 U.S.C. 280b–3(a) ) is amended by striking authorized to be appropriated and all that follows through the end and inserting the following: authorized to be appropriated such sums as may be necessary for each of fiscal years 2018 through 2022. . 303. Protecting confidential doctor-patient relationship Section 2717(c) of the Public Health Service Act ( 42 U.S.C. 300gg–17(c) ) is amended by adding at the end the following new paragraph: (6) Rule of construction Notwithstanding the previous provisions of this subsection, none of the authorities provided to the Secretary under this subsection, Public Law 111–148 , or an amendment made by such Public Law shall be construed to prohibit a physician or other health care provider from— (A) asking a patient about the ownership, possession, use, or storage of a firearm or ammunition in the home of such patient; (B) speaking to a patient about gun safety