The power of naturalization is exclusively in Congress. Chirac v. Chirac 2 Wheat. 259; 4 Cond. Rep. 111.

A naturalized citizen, who in time of peace, returns to his native country for the purpose of trade, but with the intention of returning again to his adopted country, continuing in the former, a year after the war between the two countries, for the purpose of winding up his business, engaging in no new commercial transactions with the enemy, and then returning to his adopted country, has gained a domicil in his native country, and his goods are subject to condemnation. The Frances, 8 Cranch, 335; 3 Cond. Rep. 154.

The various acts on the subject of naturalization submit the decision upon the right of aliens to courts of record. They are to receive testimony; to compare it with the law; and to judge on both law and fact. If their judgment is entered on record in legal form, it closes all inquiry, and like other judgments, is complete evidence of its own validity. Spratt v. Spratt, 4 Peters, 393.

It need not appear by the record of naturalization, that all the requisites presented by law, for the admission of aliens to the rights of citizenship, have been complied with. Starke v. The Chesapeake Ins. Comp., 7 Cranch, 420; 2 Cond. Rep. 556.

A certificate by a competent court, that an alien has taken the oath prescribed by the act respecting naturalization, raises the presumption that the court was satisfied as to the moral character of the alien, and of his attachment to the principles of the constitution of the United States. The oath when taken, confers the rights of a citizen. It is not necessary that there should be an order of court admitting him to be a citizen.

The children of persons duly naturalized before the 14th of April, 1802, being under age at the time of the naturalization of their parent, were, if dwelling in the United States on the 14th of April, 1802, to be considered as citizens of the United States. Campbell v. Gordon, 6 Cranch, 176; 2 Cond. Rep. 342. See also ex parte Newman, 2 Gallis’ C. C. R. 11; Peters’ C. C. R. 457.