The difference between a tax and a standard is here
essential. The obligation to declare the content
carbon from an imported good does not increase its value.
The flow of carbon points corresponding to this
content only has the effect of equalizing
competitive conditions national suppliers and
foreign suppliers, which is the basis of
international free trade agreements. If it was a
tax, the system would not be compatible with the rules
current WTO and would therefore require negotiation
international (of uncertain duration and results). At
on the contrary, the carbon content display standard is
compatible with the WTO.