(a) When a judgment of conviction in a criminal action has been entered, the clerk shall forthwith furnish to the marshal a certified copy of the original judgment, and no other warrant or authority is necessary to justify its execution. Upon the expiration of any stay of execution to which the defendant may be entitled, the marshal shall execute the judgment forthwith.
(b) If the judgment is for imprisonment, or a fine and imprisonment until it be paid, the defendant shall be committed to the custody of the proper officer, and by him detained until the judgment is complied with. The marshal shall take and deliver the defendant to the authorized representative of the Commissioner of Public Safety or of the Attorney General of the United States, as the case may be. He shall also deliver to such representative the certified copy of the judgment, and take from the representative a receipt for the body of the defendant.
(c) If the judgment imposes a fine or penalty, whether alone or with any other kind of punishment, the judgment, so far as the fine or penalty is concerned, may be enforced by execution against the property of the defendant in like manner as judgments in civil actions. If the judgment directs imprisonment until the fine is paid, the issue of execution on the judgment shall not discharge the defendant from imprisonment until the amount of the judgment is paid.