Mitt Romney's Bain-era offshore investing vehicle, Sankaty High Yield Asset Investors, was based in Bermuda, which has a very favorable tax regime for international moneymen. Mitt’s not alone in saving billions. Google allegedly has saved $3.1 billion in taxes by putting most of its foreign profits in Bermuda, Ireland, and the Netherlands, according to Bloomberg News. Bermuda, a British territory, also has an active community of American expatriates. It’s a rich economy, and offshore finance is its biggest sector.