Federal

• Contact Congress
• National Conference of State Legislatures
  http://www.ncsl.org/programs/fiscal/tctelcom.htm
• National Governors Association
  http://www.nga.org/

• Federation of Tax Administrators
  http://www.taxadmin.org/
• Multistate Tax Commission
  http://www.mtc.org/
• Streamlined Sales Tax System
  http://www.geocities.com/streamlined2000/