Puerto Rico is an island which was always attached to the United States. In 2012, a referendum was organized to know if the inhabitants wished to remain a free State, a Commonwealth, but still attached to the United States or to become a new American State. 65% of the inhabitants decided to become an American state but despite everything, it seems that the Commonwealth law is always applied and this one regards marriage as a union between a man and a woman and does not grant any recognition to the same-sex couples.
The marriage of Ada Conde Vidal and Ivonne Álvarez Velez, who married in the United States in Massachusetts, is thus not recognized by the civil code of Puerto Rico which recognizes only the same-sex civil unions.
As a result, they decided to set in motion a legal procedure.