As the Marketplace Fairness Act winds its way through Congress, lawmakers should, at the very least, take into consideration concerns raised by opponents. That is only prudent, especially since Congress has never held a hearing on the bill or markup of its previous incarnations.

The past several years have seen a groundswell of regulations on plastics, particularly plastic bags and polystyrene food containers. Supporters of these bans claim that such policies promote environmental protection, when in reality they carry considerable environmental tradeoffs and impose needless burdens on consumers and economic growth.