U.S. Constitution. The document also notes that any attempt to pursue an enhanced Commonwealth within the Territorial Clause would be "constitutionally problematic" and not permanent, since future Congresses retained the capacity of unilaterally modifying any agreements reached. The report proposed a mechanic that earned local critics, since it established a two-step referendum where the status alternatives were "cluttered together", the territorial Commonwealth and statehood in a "sovereignty remains in Congress" and "free association and independence" in a "Puerto Rico reclaims it sovereignty" option. The soberanistas were not satisfied with the report since, despite the document recommending "that at the time of any transition to a freely associated state, all Puerto Rican U.S. citizens retain their U.S. citizenship", the affirmation that "Free Association is a type of independence" directly contradicted UN General Assembly Resolution 1514, which identified both as distinctly separate decolonization alternatives. The format proposed for a two-step referendum was also criticized, being considered an attempt to retain the status quo, since being paired with the numerically weak independence would mean a guaranteed loss. ALAS expressed disappointment, stating that if the territorial Commonwealth "remained as a political option, the Task Force would have failed to accomplish its purpose and assignment" and noting their "precise objections [in relation] to the characterization of Free Association as an Independence category, the two plebiscite process, and its failure to consider applicable International Law". In April 2011, the PPD's Status Commission released a report. The document included "10 principles of association" for the non-territorial development of the Commonwealth, a dissection of both the Pacto de Asociacion and the Pacto de futuro, a study of the President's Task Force report and a recommendation to establish a permanent Status Commission. The document received the support of Delgado, Fas Alzamora and Yulín, but Colberg Toro did not attend to vote and conservative López de Arrarás voted against it. The publishing of the PPD's Status Commission report coincided with the change in administration, with García Padilla downgrading it to a "working document". This posture prevented the official presentation of the document before the Government Board and it was left indefinitely pending. Under García Padilla's leadership, the PPD ordered all PPD-affiliates that signed to certify the MUS to file another affiliation document, arguing that by endorsing another party they no longer belonged to the PPD. The MUS considered this a form of harassment and requested a clarification from Conty Pérez.