To the. admissibility of which paper in evidence, the defendant, by his counsel, objected; the' same not being legal or competent evidence of the American citizenship of said D’Ar-bel. But the court were of opinion, and so decided, that the said paper was legal and competent evidence of said citizenship, and the-same was admitted.
There is some diversity of opinion on the bench, with respect to the admissibility in evidence of this passport, arising^ in some measure, from-the circumstances under which the offer was made, and its connexionwith other matters which had been given-, in evidence. Upon the general and abstract question, whether the passport,.pér se, was legal and competent evidence of the fact of citizenship, we are of opinion that it was not.
There.is no Jaw of the United States, in any manner regulating the issuing of passports, or directing upon what evidence . it may be done, or declaring their legal effect. It is understood, as matter of practice, that some evidence of citizenship is required, by the secretary of state, before issuing a passport. This,- however, is entirely discretionary' with 'him.' .No inquiry is instituted by him to ascertain' the fact of citizenship, or any proceedings had, that will iri any manner bear the character of a judicial inquiry. It is a' document, which, from its nature and object, is addressed-to foreign powers; purporting only to be á request, that the bearer of it may pass safely and freely ; and is to be. considered rather in the. character of á political document, by which,the bearer is recognized, in foreign countries, as an American citizen; and which, by usage and the law of nations, is received as evidence of the fact. But. this-is a-very different light, from that in which it is to be viewed in a court, of justice, where the inquiryis, as to the fact of citizenship. It is. a mere ex parte certificate; ‘and if founded upon any evidence produced to the secretary of state, establishing the fact of citizenship, that evidence, if of a character admissible in a court of justice, ought jo be produced upon ihe trial, as higher and better evidence of the ,iact.- But whether the circuit court erred, in admitting the passport in evidence, under ithe circumstances stated in the exception, this court is divided in opinion, and the point is of course undecided.