Wall Street Journal: Thomas Donohue built the U.S. Chamber of Commerce into Washington’s biggest-spending lobbying group by seizing the opportunities of a pro-business, Republican decade. But as Washington tilts more Democratic, populist and green, some big companies are becoming leery of allying too closely with conservative, antiregulatory institutions such as the chamber. On issues such as climate change, Mr. Donohue is finding his efforts countered by big corporations, several of them chamber members, …