Last week, I noted the unease between the Obama administration and the U.S. Chamber of Commerce, “Is the White House at War with the U.S. Chamber.”

The Politico reports today the White House’s attempts to undermine America’s largest business organization may have backfired. U.S. Chamber President Tom Donohue said the attacks have helped the organization raise more money from sympathetic members.

In the Politico interview, Donohue insists the association will “exceed its fundraising for last year by more than $10 million, and the timing of the White House attack could further pad the Chamber’s war chest.”

Is the Obama administration trying to marginalize America’s largest business group?

“The uneasy relationship between the Obama White House and the U.S. Chamber of Commerce has steadily eroded over the past several months, with the business group’s opposition to health care and climate change legislation triggering an all-fronts backlash from the administration,” Fox News reports, “White House targets Chamber.” “The administration is now trying to neutralize the Chamber by doing an end-run around the group and dealing directly with its members.”

“Obama and top aides quietly have met with 50 to 60 big-time corporate CEOs over the past few months in an effort to cultivate their support on key issues — the White House denies that it has encouraged any companies to sever ties with the Chamber.”

Liberal groups have highlighted such firms as Apple cancelling their Chamber membership over climate change legislation. Another influential firm, Nike, resigned its seat on the board of directors.

(It’s somewhat hypocritical of Apple and Nike to support the proposed cap-and-trade legislation pending in Congress. Both companies manufacture their products in third-world countries exempt from limits on carbon emissions. The Chamber’s membership also includes many companies with U.S. factories that would face steep costs to stay in business if cap-and-trade would become law.

Obama’s allies are turning up the heat on the U.S. Chamber as well. A group of small businesses in Iowa, called 1Sky, recently issued a news release in which they criticized the Chamber for not supporting climate change legislation.