I can't find even a nut-group that claims that August Busch IV funds the CSPI.
It's exactly the opposite. Busch and the CSPI are mortal enemies and he funds the nut-groups that attack them.
Center for Consumer Freedom
The Center for Consumer Freedom (CCF) (formerly called the "Guest Choice Network (GCN)") is a front group for the restaurant, alcohol, tobacco and other industries. It runs media campaigns which oppose the efforts of scientists, doctors, health advocates, environmentalists and groups like Mothers Against Drunk Driving, calling them "the Nanny Culture -- the growing fraternity of food cops, health care enforcers, anti-meat activists, and meddling bureaucrats who 'know what's best for you.'"
Who runs the CCF? Rick Berman
. And where does Berman get his funding?
As a private company, Berman & Co. is not required to disclose its finances. However, two of its front groups - the Center for Consumer Freedom and the Employment Policies Institute Foundation - are registered as tax-exempt nonprofit organizations, and they are required to disclose some financial information to the Internal Revenue Service which is publicly available by inspecting their IRS Form 990s.
Although Berman refuses to disclose the identity of its anonymous funders, the following companies have been linked to Berman & Co. in news reports and other public documents:
And why does August Busch IV hate the CSPI so much
Anheuser-Busch will remove the caffeine, guarana, and ginseng from its flavored malt beverages Tilt and Bud Extra, and is calling on its competitors in the industry to similarly stop making pre-packaged caffeinated alcohol beverages. The move comes as part of agreements reached with the nonprofit Center for Science in the Public Interest(CSPI), which in February threatened to file suit against the company over the drinks, and a group of 11 state Attorneys General, which has separately been investigating the company.
That's just one aspect of a years-long campaign the CSPI has waged against Anheuser-Busch.
I think this OP may have set a record for being the wrongest in the weirdest way for a first post. And that covers an incredible amount of territory.