The six presidential nominees to the Rajya Sabha have reportedly been handpicked by Congress chief Sonia Gandhi, in an attempt to reassert her authority in the United Progressive Alliance government, which has allegedly acquired a pro-United States stance under the aegis of Prime Minister Manmohan Singh.The five persons nominated are Mani Shanker Aiyer, Javed Akhtar, Dr Balchandra Mungekar, Bombay Jayshri and Dr Ram Dyal Munda.