Over the past decade, ParlAmericas has strengthened parliamentary engagement with the Organization of American States (OAS), establishing itself as a formal platform within the Inter-American System. From 2015 to 2025, it conducted 92 activities, participated in major hemispheric assemblies, and influenced 16 parliamentary declarations aligned with regional norms on democracy, human rights, gender equality, the environment, and migration. This report highlights the institutional frameworks, normative alignment, and activities that have defined this decade-long collaboration.