Afghanistan: America's Afghan whistleblower John Sopko --- As a young lawyer in the 1980s, John Sopko made a name for himself fighting the mafia in Cleveland, Ohio. -- Now he is taking a similarly fearless approach to uncovering fraud and mismanagement in the US aid effort in Afghanistan. --- Since taking office as the United States Special Inspector General for Afghanistan Reconstruction (Sigar) last year, 61-year-old Mr Sopko has been making headlines with his unusually outspoken criticism of how US taxpayers' money is being spent.