He has a Law Degree from the Higher University of San Andrés of La Paz, the Bolivian Diplomatic Academy and the Institute d’Etudes Politiques commonly referred as Sciences Po de Paris.

[7] With over two decades of personal experience dealing with the United States and with four different US Presidents JAO championed Access to Information as a Fundamental Human Right in the continent.

[5] In 2019, Aparicio sued President of Nicaragua Daniel Ortega at the Inter-American Commission on Human Rights (IACHR) after Ortega jumped a constitutional ban on presidential re-election with help from a Supreme Court filled with his supporters setting a major precedent for similar unconstitutional re-elections across the continent and more especially of his Bolivian counterpart Evo Morales.

Aparicio's cousin Maria Otero[19] was the first holder of the office of the Under Secretary of State for Civilian Security, Democracy, and Human Rights under President Barack Obama's administration.

He is also a regular commentator for the Latin American Advisor, a daily current affairs publication of the Inter-American Dialogue in Washington, D.C.

In 2019, Aparicio sued President of Nicaragua Daniel Ortega at the Inter-American Commission on Human Rights (IACHR) after Ortega jumped a constitutional ban on presidential re-election with help from a Supreme Court filled with his supporters setting a major precedent for similar unconstitutional re-elections across the continent and more especially of his Bolivian counterpart Evo Morales.

In 1994, JAO, as Bolivia's deputy Minister of Foreign Affairs, organized the Summit of the Americas, a true milestone for democracies in the continent.

President Bill Clinton invited all democratic leaders of the Americas in a hemispheric initiative aimed at rebuilding the inter-American system in a new scenario defined by the end of the Cold War.

The shared strategy in these negotiations was to build a new hemispheric architecture based on representative democracy, free markets and social development.

The new regional agenda, unanimously approved by the presidents and prime ministers of the Americas, marked an exceptional moment for U.S. foreign policy.

Previously, Aparicio Otero has been an envoy on special missions for the Carter Center[55] in issues related to monitoring elections and political conflict resolution, in Nicaragua,[55] Ecuador, and Costa Rica.

The committee had a leading role in drafting the Inter-American Anti-Corruption Treaty, the resolution on Essential Elements of Representative Democracy and the Ten Principles of Access to Public Information[59] From May 1997 to December 2002, he worked at the Organization of American States first as Senior Advisor to the Secretary General and former President of Colombia César Gaviria[60][61] and later as Executive Secretary of the Summits of the Americas.

He coordinated the efforts of the Organization to initiate a dialogue with private companies of the Americas to promote Corporate Social Responsibility as a key factor to contribute to sustainable development.

On March 6, 2015, the IAHRC decided to grant precautionary measures (PM314-13),[67] requesting that the State of Mexico immediately guarantees the children's access to their mother.