much as I dont like Wikipedia, the following is a good summation:
"On 25 July 1997, before the Kyoto Protocol was finalized (although it had been fully negotiated, and a penultimate draft was finished), the U.S. Senate unanimously passed by a 95–0 vote the Byrd-Hagel Resolution (S. Res. 98),] which stated the sense of the Senate was that the United States should not be a signatory to any protocol that did not include binding targets and timetables for developing as well as industrialized nations or "would result in serious harm to the economy of the United States". On 12 November 1998, Vice President Al Gore symbolically signed the protocol. Both Gore and Senator Joseph Lieberman indicated that the protocol would not be acted upon in the Senate until there was participation by the developing nations.The Clinton Administration never submitted the protocol to the Senate for ratification"
Please note this took place during the CLINTON administration, and that the Senate shot down Kyoto NINETY FIVE to Zero...included in that 95 were names like Kerry and Kennedy.....