Significant Presidential Decisions In today's world many people don't appreciate the importance of president Lyndon B. Johnson's involvement with Vietnam or for that matter realize Lyndon B. Johnson's decision to increase U.S. involvement in Vietnam during the 1960's. As you can already tell Lyndon B. Johnson was the decision maker regarding this issue. Johnson faced the problem of the Vietnamese war. As a matter of fact this is one of the reasons why Johnson decided to increase U.S. involvement with Vietnam. The Vietnamese war was basically a war between the North and South sides of Vietnam. The North side of Vitenam became allies with the Sovie