Most in the community are aware of JFK’s refusal to send combat troops to Vietnam. Unfortunately there is another Vietnam war issue to consider: Agent Orange. It would appear that he was pretty much on board for the use of this horrible chemical warfare. As documented below. 
Item: Vijay Prashad, Consortium News.com Feb. 19, 2021: “Using Das Kapital As A Pillow”:
"From 1961 to 1971, the United States government sprayed 73 million litres of chemical weapons to destroy any vegetation in Vietnam. Agent Orange, the most terrible of chemical weapons in its day, was used on most of Vietnam’s agricultural belt.”
Item: National Security Archive Electronic Briefing Book No. 248 FIGHTING THE WAR IN SOUTHEAST ASIA, 1961-1973
Air Force Histories Reveal CIA Role in Laos, CIA Air Strike Missions, New Evidence on Nuclear Weapons, Air Force Policy Disputes, During Vietnam War Years
Document 2: USAF Plans and Policies in South Vietnam, 1961-1963, By Jacob Van Staaeveren. U.S. Air Force Historical Division Liaison Office, June 1965. Top Secret.
See pp. 56 – 61 “Defoliation”
Item: Vijay Prashad, Consortium News.com Feb. 19, 2021: “Using Das Kapital As A Pillow”:
"From 1961 to 1971, the United States government sprayed 73 million litres of chemical weapons to destroy any vegetation in Vietnam. Agent Orange, the most terrible of chemical weapons in its day, was used on most of Vietnam’s agricultural belt.”
Item: National Security Archive Electronic Briefing Book No. 248 FIGHTING THE WAR IN SOUTHEAST ASIA, 1961-1973
Air Force Histories Reveal CIA Role in Laos, CIA Air Strike Missions, New Evidence on Nuclear Weapons, Air Force Policy Disputes, During Vietnam War Years
Document 2: USAF Plans and Policies in South Vietnam, 1961-1963, By Jacob Van Staaeveren. U.S. Air Force Historical Division Liaison Office, June 1965. Top Secret.
See pp. 56 – 61 “Defoliation”