The agency directly charged with overseeing the campaign is the Central Commission for Discipline Inspection (CCDI), which, at the time of the campaign, was headed by Secretary Wang Qishan, a politician known for his work in the financial sector and one of the seven members of the Politburo Standing Committee of the Communist Party. Wang was in charge of the day-to-day execution of the campaign. The CCDI's official mandate is to enforce party discipline, combat malfeasance, and punish party members for committing offenses. The CCDI is an internal agency of the party and therefore does not have judicial authority. In general, the CCDI investigates officials and, when necessary, forwards evidence gathered to judicial organs, such as the Supreme People's Procuratorate (in charge of investigation and prosecution), who proceeds to charge the accused with criminal wrongdoing and move the case to trial.
While the CCDI formally reports into the Party Congress, nominally the highest representative body of the party which gathers once every five years, and is intended to be an 'independent' agency from a constitutional standpoint, in practice ultimate oversight of the agency falls under the purview of Xi Jinping by virtue of holding the office of General Secretary (i.e., de facto leader). Xi, who is also President, also directs anti-graft efforts of the military through his holding the office of Chairman of the Central Military Commission (i.e., commander-in-chief). The majority of reporting on the campaign by media sources have highlighted Xi Jinping's direct involvement in managing the campaign, which has become a central hallmark of his term in office. However, formal disciplinary measures meted out to high-ranking officials such as former Politburo members must undergo ratification by the sitting Politburo.
Coordination of anti-corruption efforts in the provinces and state-owned enterprises have been carried out by "central inspection teams" (中央巡视组), which reports to the Central Leading Group for Inspection Work, which like the CCDI is also led by Wang Qishan. The inspection teams are typically 'stationed' for a few months at the organization they were tasked with overseeing, and are in charge of thorough audits into the conduct of officials and organizational practices. The inspection teams sends the results of the audits to the CCDI to enact formal investigative procedures such as Shuanggui (the practice of detaining individual party members for investigation).
The proposed constitutional changes published on February 25 envision the creation of a new anti-graft state agency that merges the Central Commission for Discipline Inspection and various anti-corruption government departments. The thus formed National Supervisory Commission will be the highest supervisory body in the country, and will be a cabinet-level organization outranking courts and the office of the prosecutor.