The POD is LBJ decides not to send ground troops to Vietnam, recognizing that the war is unwinnable. In 1965, South Vietnam falls to the Communists without direct American military intervention. Republicans rail against Johnson for "losing South Vietnam," and they make gains in the 1966 midterms. Nonetheless, by 1968 LBJ remains a popular President thanks to the strong economy and the success of his domestic programs. He is elected to a second full term, but not by the same landslide margin as 1964. What does LBJ's second full term look like? Have any historians written about what Johnson planned to do, or might have done, had he been re-elected?