Multiple events contributed by LBJ escalated the Vietnam War. The first was National Security Memorandum #273 of 11/26/63, which authorized covert operations against North Vietnam, which completely reversed Kennedy's Vietnam policy in National Security Memorandum #263. On August 7, 1964, the Tonkin Gulf Resolution is adopted after the U.S-staged incident in the Gulf of Tonkin, which attempted to blame the North Vietnamese for an attack on a U.S. destroyer. The resolution gave the president broad war powers to allow him to implement military action to prevent hostile action against U.S. forces. In early February of 1965, the U.S. begins Operation Rolling Thunder, a massive bombing campaign against North Vietnam and the Vietcong. Finally, the clinching and sticking commitment decision came on June 8, 1965, when Johnson committed to send U.S. ground forces to South Vietnam.
In July of 1965, President Johnson decided to accept the proposals from the Joint Chiefs of Staff and provide the army with 44 more combat battalions and he endorsed the army's recommendation to engage in a "search and destroy" strategy for the war in Vietnam. Instead of remaining in a contain mode, the new mission would take the war to the enemy and test North Vietnam's willingness to accept major damage and continue the war.
Lyndon B Johnson, the 36th President of the U.S., helped to escalate American involvement in Vietnam by sending more troops to war. This stimulated an anti-war movement and his domestic policies failed.
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They passed the Tonkin Gulf Resolution.
LBJ escalated the Vietnam War
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He was said to escalate the Vietnam War to drastic levels that were outrageous.
I believe that was Lyndon B. Johnson. America's involvement in Vietnam was limited until he became president. According to Wikipedia, "It was Johnson who began America's direct involvement in the ground war in Vietnam." See the Related Links below for more information.
LBJ (Long Binh Jail).
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The Warren Commission was about the JFK assassination of 1963. You're probably confusing this topic with the Tonkin Gulf Incident of 1964 which gave the authority for LBJ to bomb North Vietnam.