Mitt Romney's 2010 tax returns show that in 2010, Romney and his wife, Ann, paid an effective tax rate of 13.9 percent on $21.6 million in income -- much lower than the 35 percent the country's top wage-earners pay -- and hold millions of dollars in multiple offshore accounts in the Cayman Islands [3], a notorious tax haven. The official spin is that the Cayman accounts provide no particular tax advantage, that they pay higher interest rates and help "attract foreign investors." Romney's campaign counsel, Ben Ginsburg, assured journalists that Romney was in full compliance with U.S. tax laws, and Brad Malt, who operates the Romneys' blind trust, said Romney's Cayman funds are fully taxable and reported to the IRS. That may be so, but Rebecca Wilkins, a tax policy expert with Citizens for Tax Justice, points out [4] that the federal government loses about $100 billion a year to just such foreign tax havens. Wilkins affirmed that the primary advantage to investors of setting up funds in places like the Cayman Islands is to help people avoid taxes. Jack Blum, a Washington, D.C. attorney who specializes in offshore banking and tax enforcement, said offshore investment vehicles allow investors to "avoid a whole series of small traps in the tax code that ordinary people would face if they paid tax on an onshore basis."