this section, a commission, to be known as the Bilateral Negotiating Commission , which shall conduct studies and negotiations on changes to the Commonwealth-Estado Libre Asociado status within the general framework of commonwealth status, including the potential for a compact agreement between the United States and the Commonwealth of Puerto Rico to replace the Act of July 3, 1950 (commonly known as the Puerto Rico Federal Relations Act of 1950 ) (64 Stat. 319, chapter 446). (b) Membership Not later than 180 days after the date on which the results of a plebiscite in favor of commonwealth status are submitted under section 101(d)— (1) the political party or organization representing the Commonwealth-Estado Libre Asociado status option in the plebiscite shall appoint 5 members to the Bilateral Negotiating Commission