President Obama’s accused drunken-driving uncle — who was busted after a near collision with a Framingham cop — has had a valid Social Security number for at least 19 years, despite being an illegal immigrant ordered to be deported back to Kenya, the Herald has learned. The president’s 67-year-old uncle, Obama Onyango, has had a valid Massachusetts driver’s license and Social Security number since at least 1992, said Registry of Motor Vehicles spokesman Michael Verseckes. Onyango, whose sister, Zeituni Onyango, made headlines when it was revealed she was an illegal immigrant living in public housing in South Boston, was wobbly...