resident Barack Obama next week will visit Vietnam, which his own State Department last month certified is still controlled -- four decades after the fall of Saigon -- by the Communist Party. "The Socialist Republic of Vietnam is an authoritarian state ruled by a single party, the Communist Party of Vietnam," says the Country Report on Human Rights in Vietnam that Secretary of State John Kerry released in April. Obama's agenda in this communist nation, according to the White House, will feature efforts to promote the deal his administration has negotiated to join the United States, Vietnam and 10 other...