When was the Constitution (Sixty-eighth Amendment) Act, 1991 passed and what changes did it bring in the text?
The Constitution (Sixty-eighth Amendment) Act, 1991 was passed on March 12th, 1991. It substituted the word "five years" for "three years" in reference to a Proclamation issued under clause (1) on May 11th, 1987 with respect to the State of Punjab.