I'm not entirely sure why you're being so heavily down-voted. It's clear that women in the USA do not have a guaranteed right to govern their own bodies. A constitutional amendment guaranteeing such a right to everyone is very much needed, not only due to the abortion issue, but also situations like the one in Colorado where a man died because the cops told an EMT to inject him with ketamine against his will.
Secondly, you are absolutely right about slavery. Slavers IS still legal in the USA under the 13th Amendment which says, in part:
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.