From Government Executive:

On Monday, the Government Accountability Project, POGO, National Taxpayers Union, ACORN 8 (a watchdog organization), Protect Democracy, Public Citizen, Public Employees for Environmental Responsibility, R Street Institute, Taxpayers for Common Sense, Taxpayers Protection Alliance and Whistleblowers of America, sent a different letter to Republican members of the Senate Whistleblower Caucus supporting the amendment.