The current assessment of the state of political division in the United States is foreboding. Americans are more divided than any time since the Civil War, leaving some to opine that these differences may be irreconcilable. This speculative analysis takes seriously as its point of departure the position of a growing number of American commentators and policy experts who argue that the United States exhibits many of the risk factors that could lead to another civil war. Some commentators have advocated breaking up the union to preempt this outcome. The critical analysis within this article draws upon historical analogies from states partitioned during the 20th century, such as the Soviet Union, Yugoslavia, Czechoslovakia, Palestine, and India. These comparisons are used to evaluate proposals for a geographical sundering of the United States into Red and Blue Americas. My analysis highlights how any kind of national dissolution, though appealing to some at first glance, would be more politically complex, demographically fraught, and possibly no less violent than the alternative of civil conflict.