Upon returning from a G-8 climate change summit in Italy in March, 2001, EPA administrator Christie Todd Whitman sent a strongly worded memo to President Bush urging the administration to remain engaged in international climate change negotiations. "I would strongly recommend that you continue to recognize that global warming is a real, and serious issues," she wrote. "Mr. President, this is a credibility issue (global warming) for the U.S. in the international community." A few days later, against Whitman's advice, President Bush sent a letter to Congressional opponents of action on global warming. It made clear that the U.S. would pull out of any engagement on Kyoto and not regulate carbon emission from U.S. power plants, as was promised during the campaign.