Commentaries on the Laws of England, Book the First

by Sir William Blackstone

[m] 7 Rep. 7.

[n] 2 P. Wms. 124.

[o] 1 Hal. P.C. 68.

Local allegiance is such as is due from an alien, or stranger born, for so long time as he continues within the king's dominion and protection[p]: and it ceases, the instant such stranger transfers himself from this kingdom to another. Natural allegiance is therefore perpetual, and local temporary only: and that for this reason, evidently founded upon the nature of government; that allegiance is a debt due from the subject, upon an implied contract with the prince, that so long as the one affords protection, so long the other will demean himself faithfully. As therefore the prince is always under a constant tie to protect his natural-born subjects, at all times and in all countries, for this reason their allegiance due to him is equally universal and permanent. But, on the other hand, as the prince affords his protection to an alien, only during his residence in this realm, the allegiance of an alien is confined (in point of time) to the duration of such his residence, and (in point of locality) to the dominions of the British empire. From which considerations sir Matthew Hale[q] deduces this consequence, that, though there be an usurper of the crown, yet it is treason for any subject, while the usurper is in full possession of the sovereignty, to practice any thing against his crown and dignity: wherefore, although the true prince regain the sovereignty, yet such attempts against the usurper (unless in defence or aid of the rightful king) have been afterwards punished with death; because of the breach of that temporary allegiance, which was due to him as king de facto. And upon this footing, after Edward IV recovered the crown, which had been long detained from his house by the line of Lancaster, treasons committed against Henry VI were capitally punished, though Henry had been declared an usurper by parliament.

[p] 7 Rep. 6.

[q] 1 Hal. P.C. 60.

This oath of allegiance, or rather the allegiance itself, is held to be applicable not only to the political capacity of the king, or regal office, but to his natural person, and blood-royal: and for the misapplication of their allegiance, viz. to the regal capacity or crown, exclusive of the person of the king, were the Spencers banished in the reign of Edward II[r]. And from hence arose that principle of personal attachment, and affectionate loyalty, which induced our forefathers (and, if occasion required, would doubtless induce their sons) to hazard all that was dear to them, life, fortune, and family, in defence and support of their liege lord and sovereign.

[r] 1 Hal. P.C. 67.

This allegiance then, both express and implied, is the duty of all the king's subjects, under the distinctions here laid down, of local and temporary, or universal and perpetual. Their rights are also distinguishable by the same criterions of time and locality; natural-born subjects having a great variety of rights, which they acquire by being born within the king's ligeance, and can never forfeit by any distance of place or time, but only by their own misbehaviour: the explanation of which rights is the principal subject of the two first books of these commentaries. The same is also in some degree the case of aliens; though their rights are much more circumscribed, being acquired only by residence here, and lost whenever they remove. I shall however here endeavour to chalk out some of the principal lines, whereby they are distinguished from natives, descending to farther particulars when they come in course.

An alien born may purchase lands, or other estates: but not for his own use; for the king is thereupon entitled to them[]. If an alien could acquire a permanent property in lands, he must owe an allegiance, equally permanent with that property, to the king of England; which would probably be inconsistent with that, which he owes to his own natural liege lord: besides that thereby the nation might in time be subject to foreign influence, and feel many other inconveniences. Wherefore by the civil law such contracts were also made void[t]: but the prince had no such advantage of escheat thereby, as with us in England. Among other reasons, which might be given for our constitution, it seems to be intended by way of punishment for the alien's presumption, in attempting to acquire any landed property: for the vendor is not affected by it, he having resigned his right, and received an equivalent in exchange. Yet an alien may acquire a property in goods, money, and other personal estate, or may hire a house for his habitation[]: for personal estate is of a transitory and moveable nature; and, besides, this indulgence to strangers is necessary for the advancement of trade. Aliens also may trade as freely as other people; only they are subject to certain higher duties at the custom-house: and there are also some obsolete statutes of Henry VIII, prohibiting alien artificers to work for themselves in this kingdom; but it is generally held they were virtually repealed by statute 5 Eliz. c. 7. Also an alien may bring an action concerning personal property, and may make a will, and dispose of his personal estate[w]: not as it is in France, where the king at the death of an alien is entitled to all he is worth, by the droit d'aubaine or jus albinatus[x], unless he has a peculiar exemption. When I mention these rights of an alien, I must be understood of alien-friends only, or such whose countries are in peace with ours; for alien-enemies have no rights, no privileges, unless by the king's special favour, during the time of war.