The NIH plans to spend $178,000 to unlock the mystery of why drug-using prostitutes in Thailand are more likely to be infected with HIV. The study, "Substance Use and HIV Risk among Thai Women," will have researchers interview 60 sex workers to understand the factors that make the prostitutes prone to HIV infection. Watchdogs groups are calling the study a huge waste of American taxpayers' money. "This really is a complete waste of money and should not be funded by the taxpayer," said David Williams, vice president for policy at Citizens Against Government Waste. Other NIH studies that have come under scrutiny include investigations on why the obese are underrepresented in long distance running competitions and why the blind make extraordinarily poor search and rescue pilots.