The OP was asking for a "decent" U.S. copywriter. I would suggest that an "indecent" writer would write with more imagination and passion,no?
I understand why you need a native speaker. Linguists say that, in a real sense, written English is a different language than spoken English. That’s true of every language. Writing down your words changes what you’re saying. For one thing, your tone of voice disappears. Advertise about this job on differren americal blogger websites, try http://www.creativejobscentral.com,