for party discipline, and of the Workers' and Peasants' Inspectorate (known by its Russian acronym Rabkrin), an agency created to oversee implementation of Soviet economic policy at every level. Though initially reluctant to take up the positions, as it meant a move to Moscow, Ordzhonikidze was forced to do so by Stalin, who told him to either accept the post or become First Secretary of the North Caucasus, which would have been a downgrade in status and prestige. Historian Oleg V. Khlevniuk speculated that Ordzhonikidze was not interested in taking over Rabkrin as it meant leaving the quiet of a low-key post in the Caucasus and getting intimately involved in the drama and politics at the highest levels. As the head of Rabkrin, Ordzhonikidze replaced Valerian Kuybyshev, who took over the Supreme Soviet of the National Economy (known as Vesenkha, after its Russian acronym, VSNKh). At the same time as this appointment, Ordzhonikidze was named a candidate member of the Politburo, the executive committee of the Communist Party, though technically his position as head of the Central Control Commission should have precluded that, as there was supposed to be a separation between the two offices. He served as a candidate member of the Politburo from 23 July to 3 November 1926, when he was removed. The purpose of Rabkrin was meant to ensure the Soviet economy worked properly, in that it oversaw planning and implementation, budgetary considerations, and administrative policies. Under Kuybyshev, Rabkrin had become rather ineffective and was primarily focused on administrative theory rather than firm action, in part because the economic situation of the Soviet Union had improved by 1926. Initially unfamiliar with the field, Ordzhonikidze quickly educated himself on the best means to use Rabkrin and re-oriented its focus towards industry, specifically overseeing the workings of Vesenkha. In a speech he gave to Rabkrin officials shortly after taking over, Ordzhonikidze stated they had two main duties: to fight bureaucratization of the state and economic apparatus and to "review the whole complex of the state system". Between 1927 and 1930, Rabkrin launched hundreds of investigations into the workings of the Soviet economy. Historian Sheila Fitzpatrick has noted that during this period it looked at "the oil industry, the chemical industry (twice), precious metals, capital construction in industry, repair and re-equipment of industry, planning in industry, delivery of imported equipment, use of foreign experts, the design bureau of the