1. Short title This Act may be cited as the Blue Water Navy Vietnam Veterans Act of 2019 . 2. Clarification of presumptions of exposure for veterans who served in vicinity of Republic of Vietnam (a) Compensation Subsections (a)(1) and (f) of section 1116 of title 38, United States Code, are amended by inserting (including the territorial seas of such Republic pursuant to the maximum extent authorized by international law) after served in the Republic of Vietnam each place it appears. (b) Health care Section 1710(e)(4) of such title is amended by inserting (including the territorial seas of such Republic pursuant to the maximum extent authorized by international law) after served on active duty in the Republic of Vietnam . (c) Effective date The amendments made by subsections (a) and (b) shall take effect as of September 25, 1985. 3. Presumption of herbicide exposure for certain veterans who served in Korea (a) In general Chapter 11 of title 38, United States Code, is amended by inserting after section 1116 the following new section: 1116A. Presumption of herbicide exposure for certain veterans who served in Korea (a) Presumption of service-Connection (1) For the purposes of section 1110 of this title, and subject to section 1113 of this title, a disease specified in subsection (b) that becomes manifest as specified in that subsection in a veteran described in paragraph (2) shall be considered to have been incurred or aggravated in the line of duty in the active military, naval, or air service, notwithstanding that there is no record of evidence of such disease during the period of such service. (2) A veteran described in this paragraph is a veteran who, during active military, naval, or air service, served in or near the Korean Demilitarized Zone (DMZ), during the period beginning on September 1, 1967, and ending on August 31, 1971. (b) Diseases A disease specified in this subsection is— (1) a disease specified in paragraph (2) of subsection (a) of section 1116 of this title that becomes manifest as specified in