starting a consumers union

What is the name of your state (only U.S. law)? NY.

My friends and I are considering starting a national consumers union to inform the public of bad business practices and take action via boycotts when necessary. Is it legal for us to start such a union? Can we use the term "Union in our name? Any other legal ramifications we'd need to handle.

Knock yourself out.

realize that the name "Consumers Union" is an active business so you need to be aware of that and avoid infringing on any copyrights or trademark rights held by Consumers Union.