[Organization] claims that it works with your organization and I was hoping you could let me know if this org is associated with you.
Membership in the U.S. Chamber is open to any company, and does not imply our endorsement of the organization. We will not confirm the membership status of organizations. To find out if a specific company is a member, you will have to contact the company directly.
If the purpose of your request is to determine the validity of a company, we suggest that you contact the Better Business Bureau or your state and local consumer protection agencies, many of which can be found here. The Federal Trade Commission also has a useful website for consumers.