Yes, slavery is America's original sin. Who could have imagined that bringing uncivilized, unassimilable people to live in your midst could be a negative? /sarc
After the rebellion in Haiti, we should have got wise and deported every slave of color. But no, people were too greedy and short-sighted.
Slavery was worse for the owners than it was the slaves and almost everything that's wrong with America politically can be traced to slavery and our failure to deport them.
It could very well be argued that it was the revolt in Haiti that set the question of emancipation back 40 years!
Greed did play a part. But it was more of what do we do with them after emancipation? It was quite doubtful that many in the north or south would have been willing to fork over passage money home.
