The foreign policy of the United States has historically evolved within the framework of competing schools of thought, notably Wilsonianism, Hamiltonianism, and Jacksonianism. With the election of Donald Trump and his two presidential terms (2017-2021 and 2025–present), U.S. foreign policy underwent significant transformations characterized by nationalist, isolationist, and populist tendencies. This study aims to identify the ideological orientation of Trump's foreign policy by analyzing it through the lens of traditional American foreign policy schools. This is a qualitative, descriptive-analytical study that employs critical discourse analysis and qualitative content analysis. The data corpus includes presidential speeches, official policy documents, and foreign policy actions taken during both terms of Trump’s presidency. These data are analyzed across five key policy domains and compared with the core features of the Wilsonian, Hamiltonian, and Jacksonian schools. Findings indicate that Trump’s foreign policy aligns most closely with the Jacksonian tradition, particularly in a revised form referred to as “populist Jacksonianism.” Characterized by anti-elitism, aggressive nationalism, hostility toward international institutions, discursive enemy construction, and a highly personalized and media-driven style, Trump’s foreign policy diverges significantly from both Wilsonian liberal internationalism and Hamiltonian institutional economic engagement. This ideological orientation not only shaped the core of Trump’s first term but has continued and even intensified during his second term in office, potentially reshaping the future trajectory of American foreign policy.