1. Short title This Act may be cited as the Sexual Trauma Ongoing Protections Act of 2019 or the STOP Act of 2019 . 2. Command influence under the Uniform Code of Military Justice (a) Article 37 Section 837 of title 10, United States Code (article 37 of the Uniform Code of Military Justice), is amended— (1) in the heading, by striking Unlawfully influencing action of court and inserting Command influence ; (2) in subsection (a)— (A) by striking (a) No authority convening a general, special, or summary court-martial and inserting (a)(1) No court-martial convening authority ; (B) in paragraph (1) (as designated by subparagraph (A) of this paragraph), by striking proceeding. No person and inserting the following: proceeding. (3) No person ; (C) by inserting before paragraph (3) (as designated by subparagraph (B) of this paragraph) the following new paragraph: (2) No court-martial convening authority, nor any other commanding officer, may deter or attempt to deter a potential witness from participating in the investigatory process or testifying at a court-martial. The denial of a request to travel at Government expense or refusal to make a witness available shall not by itself constitute unlawful command influence. ; (D) in paragraph (3) (as so designated)— (i) by inserting attempt to before influence ; (ii) by striking with respect to his judicial acts and inserting or preliminary hearing officer with respect to such acts taken pursuant to this chapter as prescribed by the President ; and (iii) by striking the second sentence; and (E) by adding at the end the following new paragraphs: (4) Paragraphs (1) through (3) shall not apply with respect to— (A) general instructional or informational courses in military justice if such courses are designed solely for the purpose of instructing members of a command in the substantive and procedural aspects of courts-martial