The US would be spending a whopping $200 million (Rs 900 crore approx) per day on President Barack Obama's visit to Mumbai."The huge amount of around $ 200 million would be spent on security, stay and other aspects of the Presidential visit," a top official of the Maharashtra government privy to the arrangements for the high-profile visit said. About 3,000 people including Secret Service agents, US government officials and journalists would accompany the President. Several officials from the White House and US security agencies are already here for the past one week with helicopters, a ship and high-end security instruments....