Five days after Pearl Harbor, at the request of the president Attorney General Francis Biddle issued Circular No. 3591 to all federal prosecutors, instructing them to actively investigate and try any case of involuntary servitude or slavery.
Lima hari setelah Serangan Pearl Harbor, atas permintaan presiden, Jaksa Agung Francis Biddle mengeluarkan Surat Edaran No. 3591 kepada semua jaksa federal, menyuruh mereka secara aktif menginvestigasi dan menuntut semua kasus perhambaan di luar kemauan dan perbudakan.