True -- just read the 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."
As opposed to abolishing slavery, the 13th amendment specifically re-institutes slavery within the US. The old Jim Crow and the War on Drugs, the new Jim Crow, have guaranteed that slavery in America persists to the present.