USA, Canada / Polish company on American market. Clients resign to find out we are from Poland? [3]

Hi.

I'm representing Polish IT company which successfully provides SEO services in Poland for 5 years. This year we want to spread our services across American market, we have already registered our company in the USA so there won't be any legal problems. The problem is that every time we admit that we're Polish - clients resign immediately. Any advice (beside giving up admitting to Polish origins of the company)?