...Some of the posters here seem to think that the founding fathers had a culturally induced blindspot on the subject of slavery--not true--they bitterly debated it, and realized that they couldn't resolve the issue before declaring independence"

Not a blind spot, but a sense of priorities that saw slavery as a less important issue than independence, and as somnething which could be tolerated. A view not shared by the many Black Americans who fought on the other side.