In 1970 the Justice Party (AP) and the Republican People's Party (CHP) submitted to the parliament a draft law that would endanger the existence of any other confederation than Türk-İş. The board of DİSK convened on 3 June 1970 and decided to form resistance committees in accordance with the right of resistance in the Constitution. On 15 and 16 June the workers employed at enterprises organized by DİSK stopped work and leaving the factories started to march. This action ended with the declaration of martial law in Istanbul in the evening of 16 June. DİSK leaders and a large number of workers were arrested and tried at military courts. The law was annulled by the Constitutional Court on 9 February 1972. The confederation reported a total of 88,650 members as of end-1970.