It turns out that the U.S. Chamber of Commerce only has 300,000 members, not the “more than 3 million” it claimed to represent just a day ago, before Mother Jones magazine questioned the business lobby’s inflated numbers.

The Chamber has now “quietly backed off” the 3 million figure, according to Mother Jones, which reports today that:

Getting called out for such “semantic tricks” is the least of the Chamber’s problems these days.

The Huffington Post reports that MacAndrews & Forbes Holdings, the holding company owned by multi-billionaire Ronald Perelman, is debating whether to leave the U.S. Chamber of Commerce over its extreme climate position and recent “Scopes Monkey Trial” challenge to the EPA over the Clean Air Act.

The Chamber has been losing members – real members out of its actual 300,000 or less total – at a rate of several each week lately.  Apple was the most recent in a string of high-profile defections including Exelon, Pacific Gas & Electric, PNM Resources, Nike, Levi Strauss & Co. and PSEG. 

The exodus has weakened the Chamber’s credibility on the Hill at a critical time when business leaders are descending on Washington to lobby Congress to pass strong climate and energy legislation. Pete Altman at NRDC’s Switchboard blog has compiled a running tally of editorials from around the country criticizing the Chamber’s intransigence on climate change in a post titled “The U.S. Chamber’s Continuing Climate Credibility Crisis.”