Original Sin---was a concoction made by Augustine.  God did not create the world in six days.  There was no REAL GARDEN, and there was never only one human couple---homo sapiens--- on which to really pin the blame.  

But, the Original Sin of American Catholic bishops was that, being mostly White, they could not relate to Blacks [most were Protestants---Baptists] as they could to White immigrants coming from Ireland and Central Europe [mostly Catholic]. They didn't get themselves involved with Blacks nor did they reach out to the Black communities in any way from the Civil War Period.

Racism was never a problem that Catholic bishops even considered from the time of the Reconstruction of the South right to and including the Civil Rights protests of the late '60's and 70's.
Most Bishops voted against Obama---and in this past election, they voted for a bi-polar bully who is demonstrating that he may be suffering from dementia.