He made a small military intervention to ward off European powers, to proclaim his famous Roosevelt Corollary to the Monroe Doctrine, and also to obtain his 1905 Dominican agreement for U.S. administration of Dominican customs, which was the chief source of income for the Dominican government.
Fixo unha pequena intervención militar para protexerse das potencias europeas, proclamou o seu famoso Corolario Roosevelt á Doutrina Monroe, e en 1905 obtivo o acordo dominicano para que os Estados Unidos tomasen a administración das aduanas dominicanas, para ese entón, a principal fonte de ingresos para o goberno dominicano.