[650] 53 & 54 Vict. c. 37. See Piggott, "Exterritoriality. The Law relating to Consular Jurisdiction, &c.," new edition (1907).
Aliens under the Protection of their Home State.
§ 319. Although aliens fall at once under the territorial supremacy of the State they enter, they remain nevertheless under the protection of their home State. By a universally recognised customary rule of the Law of Nations every State holds a right of protection[651] over its citizens abroad, to which corresponds the duty of every State to treat foreigners on its territory with a certain consideration which will be discussed below, §§ [320]-322. The question here is only when and how this right of protection can be exercised.[652] Now there is certainly, as far as the Law of Nations is concerned, no duty incumbent upon a State to exercise its protection over its citizens abroad. The matter is absolutely in the discretion of every State, and no citizen abroad has by International Law, although he may have it by Municipal Law, a right to demand protection from his home State. Often for political reasons States have in certain cases refused the exercise of their right of protection over citizens abroad. Be that as it may, every State can exercise this right when one of its subjects is wronged abroad in his person or property, either by the State itself on whose territory such person or property is for the time, or by such State's officials or citizens without such State's interfering for the purpose of making good the wrong done.[653] And this right can be realised in several ways. Thus, a State whose subjects are wronged abroad can diplomatically insist upon the wrongdoers being punished according to the law of the land and upon damages, if necessary, being paid to its subjects concerned. It can, secondly, exercise retorsion and reprisals for the purpose of making the other State comply with its demands. It can, further, exercise intervention, and it can even go to war when necessary. And there are other means besides those mentioned. It is, however, quite impossible to lay down hard-and-fast rules as regards the question in which way and how far in every case the right of protection ought to be exercised. Everything depends upon the merits of the individual case and must be left to the discretion of the State concerned. The latter will have to take into consideration whether the wronged alien was only travelling through or had settled down in the country, whether his behaviour had been provocative or not, how far the foreign Government identified itself with the acts of officials or subjects, and the like.
[651] This right has, I believe, grown up in furtherance of intercourse between the members of the Family of Nations (see above, § [142]); Hall (§ 87) and others deduce this indubitable right from the "fundamental" right of self-preservation.
[652] See Moore, VI. §§ 979-997, and Wheeler in A.J. III. (1909), pp. 869-884.
[653] Concerning the responsibility of a State for internationally injurious acts of its own, its organs and other officials, and its subjects, see above, §§ [151]-167, and Anzilloti in R.G. XIII. (1906), pp. 5 and 285. The right of protection over citizens abroad is discussed in detail by Hall, § 87, Westlake, I. pp. 313-320, and Gaston de Leval, op. cit. Concerning the right of protection of a State over its citizens with regard to public debts of foreign States, see above, §§ [135 (6)] and [155].
Protection to be afforded to Aliens' Persons and Property.
§ 320. Under the influence of the right of protection over its subjects abroad which every State holds, and the corresponding duty of every State to treat aliens on its territory with a certain consideration, an alien, provided he owns a nationality at all, cannot be outlawed in foreign countries, but must be afforded protection of his person and property. The home State of the alien has by its right of protection a claim upon such State as allows him to enter its territory that such protection shall be afforded, and it is no excuse that such State does not provide any protection whatever for its own subjects. In consequence thereof every State is by the Law of Nations compelled, at least, to grant to aliens equality before the law with its citizens as far as safety of person and property is concerned. An alien must in especial not be wronged in person or property by the officials and Courts of a State. Thus, the police must not arrest him without just cause, custom-house officials must treat him civilly, Courts of Justice must treat him justly and in accordance with the law. Corrupt administration of the law against natives is no excuse for the same against aliens, and no Government can cloak itself with the judgment of corrupt judges.
How far Aliens can be treated according to Discretion.
§ 321. Apart from protection of person and property, every State can treat aliens according to discretion, those points excepted concerning which discretion is restricted through international treaties between the States concerned. Thus, a State can exclude aliens from certain professions and trades; it can, as Great Britain did formerly and Russia does even to-day, exclude them from holding real property; it can, as again Great Britain[654] did in former times, compel them to have their names registered for the purpose of keeping them under control, and the like. It must, however, be stated that there is a tendency within all the States which are members of the Family of Nations to treat admitted aliens more and more on the same footing as citizens, political rights and duties, of course, excepted. Thus, for instance, with the only exception that an alien cannot be sole or part owner of a British ship, aliens having taken up their domicile in this country are for all practical purposes treated by the law[655] of the land on the same footing as British subjects.