The Supreme Court has issued a notice to the centre asking it to respond to 59 petitions challenging the constitutional validity of the controversial new citizenship law. In a brief hearing this morning a three-judge top court bench headed by Chief Justice of India SA Bobde also declined to stay implementation of the Citizenship (Amendment) Act, or CAA, and said: "we will have to see whether the Act has to be stayed". The bench - which includes Justices BR Gavai and Surya Kant - has set January 22 as the next date of hearing.