The constitutional reform of 2005, by Law 20,050, was based on two motions and a presidential veto. We believe that this reform contains interesting study material in relation to treaties, since it alludes to several institutions that were not considered in the old norm.
Pérez Villar, C. G. (2016). Some questions about the approval of treaties in the constitutional reform of 2005. Revista De Derecho Público, (69), Págs. 351–365. https://doi.org/10.5354/rdpu.v0i69.40020