Ahead of his visit to India, a human rights group has asked the US President, Barack Obama, to speak about the Bhopal gas tragedy while promoting his country’s business interests during the trip. Even after 30 years, people continue to suffer from the impact of the disaster at a factory owned by US-based company Union Carbide Corporation (UCC), that killed 20,000 and injured thousand others. The site is not cleaned up, the Amnesty International had said yesterday. “The failure of Obama to speak will embolden US-based companies to ignore accountability for their involvement in human rights abuses...While promoting US business interest in India, Obama should not ignore the welfare of Indian citizens,” it added.