Just to raise awareness about this (not trying to be nitpicky, sorry) labor in american prisons is typically unpaid (or might as well be, sometimes paying less than $1/hr) and not optional as the 13th ammendemnt specifically allows slavery as a punishment. JCPenny uses american prison labor to market their jeans as made in america, and I believe mcdonalds uniforms are made with prison labor. Netflix has a very good documentary on this, I'd recommend it (as long as you're willing to be very sad about it for at least a few days) https://www.netflix.com/title/80091741

For reference the 13th ammendment reads "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."

But the rest of your post is correct.