US Republican presidential candidate Senator McCain (R-AZ) speaks to employees about alternative energies at the Vestas Wind Technology plant in Portland

 
US Republican presidential candidate Senator McCain (R-AZ) speaks to employees about alternative energies at the Vestas Wind Technology plant in Portland
US Republican presidential candidate Senator John McCain (R-AZ) speaks to employees about alternative energy sources in front of a wind turbine model at the Vestas Wind Technology plant in Portland, Oregon, May 12, 2008. McCain pledged to take the lead in combating global climate change if elected president. REUTERS/Richard Clement (UNITED STATES) US PRESIDENTIAL ELECTION CAMPAIGN 2008 (USA)