Diplomat: As the United States hosted the 7th Clean Energy Ministerial in San Francisco on June 1-2, the Obama administration sought to demonstrate global leadership on green energy and climate change. Those efforts, however, are being undercut by GOP presidential nominee Donald Trump and Republicans in Congress. Just a few days before the meetings began, Trump promised to cancel the COP21 climate accords and embrace both coal energy and the Keystone XL pipeline if he wins the election. With the European Union...