The justification of most of the exclusions just enumerated is sufficiently obvious and their enforcement in most of the Dominion Constitutions show that by common consent they have been accepted as reasonable, as for instance those dealing with national defence, treaty-making, peace and war, and the rights and privileges of the Crown. There remains, perhaps the most important point of all, namely the control or power of restriction to be exercised by the Imperial Parliament over the legislation of the new Irish Legislature by means of a veto. The Canadian Constitution confers upon the Dominion Government the same powers of disallowance of Acts of the provincial legislatures as belonged to the Imperial Government prior to 1867. According to Sir John Bourinot (“Parliamentary Procedure”), the Minister of Justice in 1868, laid down certain principles of procedure which have been generally followed up to the present time. On receipt of the Acts passed in any province they are immediately referred to the Minister of Justice who reports upon them. If the Minister considers an Act free from objection and his report is approved by the Governor-General in Council, such approval is forthwith communicated to the Provincial Government. The Minister of Justice makes separate reports on those Acts which he may consider: (1) as being altogether illegal or unconstitutional; (2) as illegal or unconstitutional in part; (3) as, in case of concurrent legislation, clashing with the legislation of the general Parliament; (4) as affecting the interests of the Dominion generally. It has also been the practice (adds Sir John Bourinot) in the case of measures only partially defective, not to disallow the Act in the first instance, but, if the general interest permits such a course, to give the local government an opportunity of considering the objections to such legislation and of remedying the defects thereof. In his book “How Canada is Governed,” Sir John Bourinot makes some pertinent remarks upon the method of dealing with such cases: “The Governor in Council can within one year from its receipt disallow an Act of a provincial legislature, and consequently prevent it becoming law.... As a rule it is the wiser policy to obtain an opinion from the Courts in all cases of doubt ... rather than use a political power which is regarded with suspicion by the provinces. The law allows such reference to the Supreme Court in Canada.”