The report to Congress by James Mahoney, Assistant Secretary of State for Climate Research, admits that greenhouse gases are the main cause of global warming. But this fact was present juqu'à denied by the Bush administration.
Indeed, GW Bush has always refused to ratify the Kyoto Protocol (yet signed by the Clinton administration). In March 2001, he declared: "I do not think that the State must require that the plants reduce their emissions of carbon dioxide, because this gas is not a" pollutant "according to the law on clean air. And "I am opposed to the Kyoto Protocol [...] because it would seriously damage the United States economy. ". He then dismissed the problem by claiming the bureaucratic origin of documents that demonstrated the human origin of global warming. He satisfied the demands of the energy lobbies who had largely financed his campaign.
But this attitude contrary to common sense had gradually raised the voices of some of his collaborators and industrialists that his plan "climate vision" had failed to silence. Finally, with the Mahoney report, signed by the secretaries of state for energy and trade, it is his own administration that officially contradicts it. It will be difficult for him to ignore it.
To know more: read the file on Radio-canada.ca