President Barack Obama's aunt, a Kenyan immigrant who ignited controversy last year for living in the United States illegally, has returned to her quiet apartment in a Boston public housing project to prepare for an April 1 deportation hearing that will be closed to the public. Zeituni Onyango, a tall, frail-looking woman in her late 50s who walks with a cane, had fled Boston to stay with relatives in Cleveland last fall after media attention erupted over her case. She was spotted at Obama's inaugural festivities in January and, according to neighbors, returned to Boston a few weeks ago for...