In 2012 the European Union imposed a carbon emissions fee on all airlines flying in and out of EU airspace that:

Question

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The imposition of the carbon emissions fee generated great opposition from more than two dozen countries, including the United States, China, and Russia. Many countries argued that the fee infringed upon their sovereignty and violated international law. As a result of the opposition, the EU eventually suspended the fee for non-EU airlines, and it was never effectively implemented.

In 2012 the European Union Imposed a Carbon Emissions Fee