A new report shows the billionaire casino mogul and top Republican donor Sheldon Adelson stands to reap a massive tax windfall should Mitt Romney win the presidential election. According to the Center for American Progress, Romney’s policies would save Adelson more than $2 billion in taxes. The savings would come through a combination of Romney’s proposals to cut the rate for top earners, avoid or exempt foreign profits, and maintain low rates on dividends and capital gains.