Nelson Arturo Ovalle Diaz, Ph.D., a member of HRREC, was invited to Brazil by the University Foundation of the Public Prosecutor's Office, Unisinos University, and the organizers of the 4th World Congress of Constitutional Justice. In the context of this invitation, Professor OVALLE DIAZ travelled to Porto Alegre - Brazil between August 25 and 31, 2019, to give three lectures: 1. Judicial Organization in Canada; 2. The new theory of law: transnational legal pluralism; 3. The peace agreement in Colombia in the light of international law.