Originally Posted by
tallow
Thirteenth Amendment:
Section 1. 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.
When YOU SIGN the contract for your training an indenture is created for the period of time specified in the contract.
Disclaimer: edits in quoted text for emphasis.
Nobody is forcing anyone to sign the contract throughout this discussion, therefore there is nothing involuntary. The 13th amendment does not apply.
Disclaimer: not an attorney, but I did study constitutional law in the police academy.