evidence: The comment by Harris, a longtime climate hawk who backed the original Green New Deal, surprised supporters and opponents alike - and conflicted with frequent boasts by Harris and President Joe Biden that they are champions in the fight to slow global warming. [...] "Harris missed a critical opportunity to lay out a stark contrast with Trump and show young voters that she will stand up to Big Oil and stop the climate crisis,’’ said Stevie O’Hanlon, a spokesperson for the Sunrise Movement, one of the groups behind the Green New Deal. [...] "There is only one presidential candidate who is a champion for climate action and that is Kamala Harris,’’ said Alex Glass, speaking for Climate Power, a liberal advocacy group. Harris "laid out a clear vision to invest in clean energy jobs and lower costs for working families,’’ Glass said.