For two centuries, it has been debated whether Thomas Jefferson, the founding father of the United States who wrote, "All men are created equal," was the father of the children of Sally Hemings, whom he enslaved. In a secret 15-year Smithsonian investigation, Jefferson's genome was extracted from hair cut on his deathbed and compared to Hemings' descendants. The new DNA findings genetically confirmed the story that the Hemings family had told fo…