Federal

Senate Finance Committee

Customs Service

Social Security Administration

House Ways and Means Committee

Treasury Department

Internal Revenue Service

Justice Department--Tax Division

Joint Committee on Taxation

National Conference of State Legislatures

National Center for State Courts

Multistate Tax Commission

Texas Comptroller's Office

National Association of Secretaries of State

Texas Workforce Commission

Federation of Tax Administrators

State of Texas

Committee on State Taxation

New Mexico Taxation & Revenue

National Governors Association

State Services Organization

Citizens for Tax Justice

American Council for Capital Formation

Heritage Foundation

Americans for Tax Reform

National Bureau of Economic Research

Brookings Institution

Tax Foundation

CATO Institute

Urban Institute

Center on Budget and Policy Priorities

Urban-Brookings Tax Policy Center