Canada

Well, you're the one who brought up the charter, so I hoped you would have an idea of specifically how the current standard is violating the Canadian Charter of Rights and Freedoms. IANAL, but as I see it:

What I do know is that I have a right to express my beliefs through my patronage

Sure, no arguments here. Section 2(b): 2 Everyone has the following fundamental freedoms: (b) freedom of thought, belief, opinion and expression, including freedom of the press and other media of communication;

and I’m currently being inhibited in that effort by the intentional obfuscation of the information I need.

This is the problem. I'm not sure there's any reason, in the charter or in other law, that a private business has to publicly disclose the origin of their raw materials. Yes, at certain stages they have to disclose to the government, potentially for health & safety, imports/tariffs, etc. And I do believe that labeling requires a manufacturer/distributor to be listed so there is a corporation who can be held responsible for the final product. However, where a company sources their ingredients could almost certainly be considered a trade secret, and outside of new legislation, I can't see manufacturers being forced to disclose this.