USA, Canada / What do Polish people think of the USA [287]

I have a question for anyone who can help me.
Currently I am doing business with someone in Poland. Is there anyway I can do a background check on that person? Here in the U.S., we have a social security# for background checks. Is there anything similar in Poland?? If so, once I obtain it is therre a government or private website which I can use for a background check??