Noriega was one of the plaintiffs in the case held against the Government of Puerto Rico. The lawsuit led to the opening of the files and passage of legislation banning such ideological persecution. In the first years of the 2000s, Noriega was named by Governor Sila María Calderón Serra (of the Popular Democratic Party) to head the "Comisión Independiente de Ciudadanos para Evaluar Transacciones Gubernamentales", also called as the Blue-Ribbon Commission, to investigate government corruption. Noriega later returned to his practice of law, and also served as a political analyst in Puerto Rican radio and news programs. During his last years, Noriega was one of the founders of the Movimiento Unión Soberanista, a new party promoting the sovereignty of Puerto Rico. He also served as member of the Board of Directors of the party which participated in the 2012 general elections. Noriega was married to Carmencita Costas. They had three children together: Rebeca, David, and Javier. On March 26, 2013, Noriega confirmed that he was suffering from cancer, and was undergoing treatment for it. He died of pancreatic cancer in the morning of May 4, 2013. As a result, Governor Alejandro García Padilla declared two days of mourning.