American exceptionalism has long defined the United States’ global identity,signifying leadership in international governance, promotion of democratic values, and economic dominance. However, recent shifts in US foreign policy, particularly under the Trump administration’s “America First” doctrine, have sparked debate over whether this exceptionalism is in decline. This chapter critically examines the evolving nature of American exceptionalism in the face of rising nationalism, isolationism, and authoritarian tendencies. While Trump’s leadership disrupted alliances and challenged liberal norms, this study argues that American exceptionalism persists; albeit in a transformed state. Rather than a complete erosion, the United States now asserts a more transactional, unpredictable form of engagement, backed by sustained economic, military, and technological strength. The analysis concludes that American exceptionalism is not ending but redefining itself in response to domestic political shifts and changing global dynamics.