This chapter examines historical and narrative disabilities through a study of the counterfactual fictions of Alan Moore’s Watchmen and Philip Roth’s The Plot Against America. The American backward glance at its own history encompasses polyphonic, imagined, even counterfactual personal and collective histories that are inextricable from a nostalgic remembrance of its past. In its national imagination, these histories are ‘able’ and whole but a disability study of the counterfactual texts in question brings forth the amputated, ‘disabled,’ broken or damaged versions of it. Examining counterfactual narratives as a site of such ability, disability, and hyper-ability, we see the different ways in which prosthetic histories reassert the idea of physical and historical ‘ability,’ and the versions of repair that seek to strengthen the narrative of American exceptionalism.