CSPI (Center for Science in the Public Interest) believes that consuming too much of any kind of sugar is bad for you. With that, I agree. So they oppose a tax plan by the city of San Francisco that would tax soft drinks containing high fructose corn syrup, but wouln’t add the tax to soft drinks containing natural sugar.
The Corn Refiners Association is against this tax plan, too, for obvious reasons. But my opinion that their view has more to do with their profits than with “public interest.” It probably also has to do with how they feel they would be perceived if an official governemnt body seemingly endorsed regular sugar as being healthier than high fructose corn syrup.
In a way, it’s understandable that each of these bodies oppose the tax plan for their own reasons. But it is really inadvisable, from my point of view, for the CPSI to sign a joint letter with the Corn Refiners Association. In a way, that hints at endorsement of HFCS takes away some of their credibility as a disinterested scientific body.