As regards a bill mentioned in paragraph 1, the President, acting in accordance with the advice of the Cabinet, may refer to a Constitutional Tribunal the question of whether the bill circumvents or curtails the discretionary powers conferred on him or her by the Constitution. If the Tribunal is of the opinion that the bill does not have this effect, the President is deemed to have assented to the bill on the day after the day when the Tribunal's opinion is pronounced in open court. On the other hand, if the Tribunal feels that the bill does have the circumventing or curtailing effect, and the President either has withheld or withholds his assent to the bill, the Prime Minister may direct that the bill be submitted to the electors for a national referendum. In that case, the bill only becomes law if it is supported by not less than two-thirds of the total number of votes cast at the referendum. If 30 days have expired after a bill has been presented to the President for assent and he or she has neither signified the withholding of assent nor referred the Bill to a Constitutional Tribunal, the bill is deemed to have been assented to on the day following the expiry of the 30-day period. The procedure is similar for a bill mentioned in paragraph 2, except that if the Constitutional Tribunal rules that the bill has a circumventing or curtailing effect, the Prime Minister has no power to put the bill to a referendum. This ensures that changes to the President's discretionary powers can only be made by way of constitutional amendments and not ordinary statutes.