Republican lawmakers want to know why a top federal official is on paid leave from his agency while earning a six-figure salary from a Fortune 500 company. Sen. Chuck Grassley (R-Iowa) and Rep. Darrell Issa (R-Calif.) are demanding answers from the Bureau of Alcohol, Tobacco, Firearms and Explosives. They said Bill McMahon is now working at JP Morgan in the Philippines. But he's still on ATF's payroll as a full-time employee in its office of professional responsibility. The lawmakers said it looks to them as though the agency is trying to let McMahon reach retirement eligibility while on extended leave. McMahon was deputy assistant director for field operations and oversaw parts of Operation Fast and Furious.