Business Green: A Congressional Committee has warned the EPA against issuing a proposed rule that would weaken laws regulating pollution from power plants. The rule, said to be under consideration at the Agency, represents the third attempt by the Bush administration to relax the New Source Review (NSR), a linchpin piece of legislation designed to limit air pollution. The New Source Review was established as an amendment to the Clean Air Act in 1977. The permit programme ensures that new power …