Inter Press Service: Environmentalists and some lawmakers are decrying a surprise move by conservative members of Congress to roll back landmark “clean energy” policies guiding U.S. investments in overseas power projects. Two federal agencies have new guidance in place largely barring government investment in power-generation projects that fail to adequately cut carbon emissions. The rules, by the Export-Import Bank and the Overseas Private Investment Corporation (OPIC), which facilitate U.S. private investments into…