A group of senators have proposed reforms which would allow gay couples to marry throughout Mexico.

Much like the United States, Mexican states individually decide on marriage. Mexico City in 2009 became the nation's first, and so far only, municipality to legislatively approve marriage equality. Mexico's highest court declared the law constitutional and ordered all states to recognize the legal marriages of gay couples. However, only a handful of states have moved on the issue. Some, under court order, have allowed marriage, while others have adopted civil unions.

Under the proposal, Mexico's Federal Civil Code would establish marriage as “the free union of two people” and state legislatures would have to adapt their laws to “regulate the institution of marriage based on the principles, human rights and individual guarantees provided in the Constitution,” CNN Mexico reported.

Jorge Luis Preciado, the leader of Mexico's right-wing National Action Party (Partido Accion Nacional, PAN) in the Senate, told CNN Mexico that his party will review the proposal but expects a “no” vote.

PAN is one of Mexico's three main political parties.

(Related: Majority of Mexicans support gay marriage.)

CORRECTION: An earlier version of this story stated that President Enrique Pena Nieto is a member of PAN. He is not. We regret this mistake.