1. Thirteenth amendment protects victims of human trafficking
The thirteenth amendment was the one that abolished slavery which meant that it was no longer possible to buy or sell slaves which is in the domain of human traficking. The only remaining option for slavery or involuntary servitude to exist was as a punishment for a criminal deed which is what prisoners were subjected to in prisons.
2. The fourteenth amendment contains the equal protection clause
This means that all people regardless of their skin color or ethnicity or religion would have the same citizenship and would equally be protecteced according to the law. Later they found ways to subvert this trough doctrines like separate but equal which resulted in segregation and racism which was not illegal.
3. The fifteenth amendment gives citizens the right to vote regardless of race
This meant that all African-Americans of age would be able to vote, including all other minorities who were forbidden from voting based on religion, race, or ethnicity. This was subverted through things like poll taxes or literacy tests which was a way to segregate African-Americans and prevent them from voting in a legal way.
