[bmohlenhoff]

It strikes me as both grammatically confusing and arrogant to refer to this organization as "the US Chamber of Commerce" when it isn't affiliated with the US government at all. It's a lobbying organization.

It's analogous to calling something "the Google" or "the Microsoft."

[krschultz]

Exactly. They have done a great job with branding to make almost everyone think they are an official part of the government. The Chamber of Commerce represents generally support incumbent business interests.

[mikeash]

See the Better Business Bureau for another example of this.

However, I don't think it's the fault of "the." Nobody thinks The New York Times or The Washington Post are government entities, for example.

[scarmig]

It seems like the "of" does it more than anything. It parallels organizations like "Department of Defense" and "Federal Bureau of Investigation": some generic noun to represent that it's an organization of people, "of," and then an abstract noun that gives the organization a purview that's universal or total in scope. Most organizations that have the audacity to do this have a monopoly on the use of force behind them.

The CoC, of course, is itself in the business of government: trade its governmental access and leverage to businesses in exchange for large cash grants.

[cmdrfred]

There are multiple chambers of commerce [centralpachamber.com, njchamber.com] so perhaps the intent is to differentiate them?

[Zigurd]

It's even better than blurring the perception between private and official bodies. They now run an "accreditation" program for local chambers of commerce, some of which have membership that would hold divergent views. This national organization is a lobby for big business and has little regard for small town business owners.

[jessriedel]

I don't think you have a good grammatical argument. There are uncountable organizations known as The American Association for XYZ or similar. The confusion really comes because "American" is less often associated with official government organizations than "US". That's not really a grammatical issue, and certainly is not arising from the use of the article "the".

[bluthru]

No private entity should be allowed to put "United States" in their title because of this exact confusion. This issue has been brought up in municipalities and the businesses were forced to remove the name of the city.

[jdminhbg]

It's analogous to calling something "the NY Times Company."