By Valerie Volcovici WASHINGTON (Reuters) -The U.S. Environmental Protection Agency (EPA) on Thursday restored the right of states and tribes to block projects on environmental grounds through the federal clean water permitting process, reversing a Trump-era effort to prevent them from doing so. The agency issued a proposed rule, first announced last May https://www.reuters.com/business/environment/us-epa-revise-trump-water-rule-boost-states-climate-fight-2021-05-27, to revise the 2020 Clean Water Act Section 401 certification rule by strengthening the authority of states, territories, and tri…