(a)to investigate and monitor all matters relating to the safeguards provided for the Scheduled Castes [* * *][under this Constitution or under any other law for the time being in force or under any order of the Government and to evaluate the working of such safeguards; [Substituted by the Constitution (Sixty-fifth Amendment) Act, 1990, Section 2 (w.e.f. 12.3.1992). ]