“With Trump indicating that he will withdraw from climate change leadership, the rest of the global community is looking to California, as one of the world’sbr largest economies, to take the lead,” said Mario Molina, a Nobel Prize-winning scientist from Mexico who advises nations on climate change policy.br “China is committed to establishing a cap-and-trade this year, and we are looking for expertise across the world as we design our program — and we are looking closely at the California experience,” said Dongquan He, a vice president of Energy Foundation China, an organizationbr that works with the Chinese government on climate change issuesbr Fighting Trump on Climate, California Becomes a Global Force -br By CORAL DAVENPORT and ADAM NAGOURNEYMAY 23, 2017br LOS ANGELES — The environmental ministers of Canadabr and Mexico went to San Francisco last month to sign a global pact — drafted largely by California — to lower planet-warming greenhouse pollution.br But of Mr. Brown’s push to expand California’s environmental policies to the countrybr and the world, Mr. Pruitt said, “That’s not federalism — that’s a political agenda hiding behind federalism.”br “Is it federalism to impose your policy on other states?” Mr. Pruitt asked in a recent interview in his office.br In an interview, he said the president’s action was “a colossal mistake and defies science.”br “Erasing climate change may take place in Donald Trump’s mind, but nowhere else,” Mr. Brown said.br But in the meantime, over a dozen other states have adopted California’s auto emissions standards — and Mr. Brown is bettingbr that the sheer size of that market will be enough to make the Trump administration reconsider any effort to roll back the California waiver.