[4][5] In 1979, he visited Argentina as part of the Inter-American Commission on Human Rights, an organization that investigated the Trujillo regime in 1976.[6] On June 22, 2005, he presented his credentials as ambassador of the Dominican Republic to the Organization of American States[7] and on July 1 he assumed the presidency of the Permanent Council,[8] remaining in the position until September.[10] Later, he served as honorary ambassador of the Advisory Commission of the Secretary of State for Foreign Relations between December 2008 and August 2010, as well as being a consultant to the Inter-American Development Bank and official delegate of Amnesty International in Nicaragua and Sri Lanka.[13] In coherence with this interest in strengthening these relations with the strategic ally of the north, Secretary of State Mike Pompeo was one of the international personalities to attend the inauguration of President Luis Abinader, on August 16, 2020.[14] In the first months of his administration he had to clarify the contractual relationship of his nephew Marcelo Guzmán Álvarez's company with the Ministry of Foreign Affairs.