Abstract This essay contextualizes and reads Albert Jeremiah Beveridge's “Government for Porto Rico” in order to discern the ways in which he crafts a rhetoric of Americanity in the Senate debate over the 1900 Foraker Act relating to Puerto Rico. Drawing from textual and archival sources, I argue that Beveridge (operating within a complex political and personal context) crafts a vision of Americanity that articulates social Darwinist commitments to Anglo-Saxon racial supremacy, a reinvigoration of Manifest Destiny, and a unique elucidation of American civil religion. Beveridge draws from familiar tropes in his earlier, and more famous, speeches to argue for a logic of possession that would see Puerto Rico and Puerto Ricans owned by the United States but not part of the nation, because such integration would contaminate the body politic.