Really? I've never heard this and a quick google doesn't bear this out. Also, it's not clear to me what they would actually do to you if you didn't...put you in prison? Release you as punishment?
13th amendment: "Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction.
Which leads to this: https://innocenceproject.org/how-the-13th-amendment-kept-sla...