The president's elderly stepgrandmother brought him an oxtail fly whisk, a mark of power at home in Kenya. Cousins journeyed from the South Carolina town where the first lady's great-great-grandfather was born into slavery, while the rabbi in the family came from the synagogue where he had been commemorating Martin Luther King's Birthday. The president and first lady's siblings were there, too, of course: his Indonesian-American half-sister, who brought her Chinese-Canadian husband, and her brother, a black man with a white wife.