In all courts, tribunals, and public offices of the United States, at home or abroad, of the District of Columbia, and of each State, Territory, or insular possession of the United States- (a) United States Code.-The matter set forth in the edition of the Code of Laws of the United States current at any time shall, together with the then current supplement, if any, establish prima facie the laws of the United States, general and permanent in their nature, in force on the day preceding the commencement