On January 16, 2007, the NPP Senate Caucus imposed disciplinary sanctions on two more NPP senators, José Emilio González, Rosselló's fellow senator from the Arecibo district, and Carmelo Ríos Santiago of the Bayamón district. The two were the decisive votes to pass a Concurrent Resolution proposing a constitutional amendment that would turn Puerto Rico's bicameral legislature in a unicameral system, an issue not addressed by the party's platform. In total, during the term, the caucus disciplined eight of the 16 members elected to the Senate in 2004.