Due to the Supreme Court�s caseload almost from the beginning of its work the Congress must to rule Acts that authorized the Court to focus its jurisdiction on the most important topics for the American life. That was made by means of increasing the discretionary jurisdiction of the Supreme Court through the writ of certiorari and decreasing its mandatory jurisdiction. Within this legal discretionary power, and also within the mandatory jurisdiction, the Court applied the «importance» of the cases as the main criterion to grant a writ of certiorari or to review an appeal. This use of the certiorari has elimina ted the Supreme Court�s caseload but also has trigger meaningful criticisms against the political role that the Court sometimes plays through its case selection and agenda setting powers.