input: Human Rights [Cons] (1)It can be far easier for a state to legalize slavery of certain colors or even all humans then it would be for the US Constitution convention. [Pros] 
output: (1)Slavery can still be banned just like within the Bill of Rights. The State would have to introduce a Constitutional Amendment banning any form of slavery and end racism. A federal Government isn’t needed to end slavery but only a government with good sense of morals and human rights support.