Commentary: Listen up: A Republican says we have to breach 4 Snake River dams

For a conservative Republican, U.S. Rep. Mike Simpson of Idaho did something extraordinary last month. By unveiling a proposal for a giant Pacific Northwest infrastructure overhaul that includes breaching four perennially disputed, fish-eradicating hydroelectric dams on the Snake River, he displayed the courage to accept an environmental reality that other conservatives have refused to face: These dams must go.