S.336 - Marketplace Fairness Act of 2013:
http://beta.congress.gov/bill/113th-congress/senate-bill/336
"Undermines States sovereignty by giving states the ability to level taxes beyond their own borders.
Damages consumer privacy by forcing retailers to turn over customer data to state governments.
Hurts healthy tax competition between states
And faces legal issues regarding due process."
"This bill is not about fairness, but rather about some businesses failing to modernize, realizing that they are losing their competitive edge, and choosing to try and legislate against their competition."
"The Marketplace Fairness Act is similar to taxing the light bulb to support the candle industry."