In the long arc of hemispheric relations, moments of deliberate diplomatic attention carry weight beyond their immediate agenda. Secretary of State Marco Rubio traveled to Bogotá this week to meet Colombia's new president, carrying the Trump administration's message that Latin America is once again a theater of active American engagement. The visit centers on security cooperation and trade, but beneath those practical concerns lies a deeper contest: the United States reasserting its historical presence in a region where Chinese influence has been quietly expanding.