The Chamber of Commerce should strike a deal with the Obama administration. They should put out a press release that states the following:
The Chamber of Commerce, in the spirit of transparency and full disclosure, will release a full list of all its donors on two conditions. MoveOn.org must release a list of all of its donors and Barack Obama must release his long form Hawaiian birth certificate, and all of his college records (including his thesis).
This is a no lose proposition for the Chamber of Commerce.