If NRDC isn't anti-business, why did one of their directors compare the U.S. Chamber of Commerce to Voldemort?

Obama pulls a Bush on clean air | Grist

The environmental groups had been invited to the White House for a 10:00 meeting whose agenda revealed nothing of the coming disaster. The last minute phone calls ensured that White House officials would not have to announce the bad news in person to an unsuspecting audience, just one that had been blindsided in transit to the meeting.
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By 10:15 am, the evil wizards at the Chamber of Commerce and American Petroleum Institute probably had popped the corks already for Voldemort cocktails of champagne and unicorn's blood.
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John Walke is a senior attorney and the Director of NRDC's Clean Air Program.