Without 3C, policymakers wouldn’t understand the impact legislation might have.

Multiple small-business owners told CNBC they didn’t know their companies had been included as members of 3C.

Google didn’t address its relationship to 3C in an email to CNET.

Amazon didn’t respond to a request for comment.

The reported lobbying effort comes as Big Tech tries to shape public opinion as it faces legislation inCongress.

The legislation is designed to increase competition and could affect how Big Tech interacts and competes with smaller businesses.

Those tools include Gmail accounts and help for companies to become more visible on search.

Facebook was listed as a partner in 2020 but isn’t currently.

The company didn’t respond to a request for comment.