FILE - In this April 12, 2012 file photo, Las Vegas Sands Chairman and CEO Sheldon Adelson speaks at a news conference in Macau. Adelson topped the list of political campaign mega donors, giving more than $90 million to Republican super PACs in all. That included more than $15 million to the organization backing former House Speaker Newt Gingrich's presidential bid and another $30 million to Romney's super PAC.