Before the 89th Amendment, the 65th Amendment Act, 1990, had replaced the Special Officer for SCs and STs (under original Article 338) with a multi- member National Commission for Scheduled Castes and Scheduled Tribes. The 89th Amendment Act of 2003 bifurcated this joint commission into two distinct bodies: the National Commission for Scheduled Castes (retaining Article 338) and the National Commission for Scheduled Tribes (inserting a new Article 338A).