Should the United States have gotten involved in the conflict in Vietnam?

Apocalyptic rhetoric rolled across the airwaves on Sept. 29, 1967, as it usually does when presidents go before the American public to explain why the nation is fighting in a war. As he spoke to his national television audience, President Lyndon Johnson sought to bolster flagging public support for the Vietnam War by highlighting the calamities that might befall the United States if the Communists prevailed.