"it is emphatically the duty of the judicial department to say what the law is. those who apply the rule to particular cases must, of necessity, expound and interpret the rule. if two laws conflict with each other, the court must decide on the operation of each." - john marshall, chief justice of the supreme court the authority claimed by john marshall in this ruling is that the supreme court has the right of a) making laws. b) judicial review. c) veto any laws of congress. d) issuing writs of mandamus in all cases.