The U.S.has been a leader in negotiations to implement the provisions of the Kyoto accord to reduce greenhouse-gas emissions and has made firm commitments to those reductions,because it is a major producer of greenhouse gases.

Question

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The U.S. signed the Kyoto Protocol but did not ratify it, and thus did not make firm commitments under that accord to reduce greenhouse gas emissions.

The USHas Been a Leader in Negotiations to Implement the Provisions