"Three bills regarding Puerto Rico's political status were introduced during the 110th Congress. H.R. 900 would have authorized a plebiscite in which Puerto Ricans would have voted on continuing the status quo or proceeding toward non-territorial status. H.R. 1230 would have authorized a constitutional convention and referendum in Puerto Rico to consider status options. The House Natural Resources Committee held a hearing on those two bills in October 2007. At that time, the Committee ordered reported favorably an amended version of H.R. 900, which combined elements of the two House bills. (The written report, H.Rept. 110-597, was issued in April 2008.) Finally, on August 2, 2007, Senator Salazar introduced S. 1936 which proposed another approach: a single plebiscite in which voters would choose between the status quo, independence, free association, or statehood. The status issue was not the subject of additional legislative action during the 110th Congress."
CRS Report for Congress, RL32933