Oversight Republicans in the House are pressing the Environmental Protection Agency (EPA) about a mine review in Alaska that they argue could spook energy investors nationwide.

Rep. Darrell Issa (R-Calif.), chairman of the House Oversight and Government Reform Committee, and panel member Rep. Jim Jordan (R-Ohio) are demanding a briefing on EPA’s watershed impact tests for a proposed mine in Bristol Bay, Alaska, according to a letter obtained by The Hill.