Impossible if his marriage is not annulled.
Assuming the thread author is just an unbelievable retard and not a troll here's a concrete answer.
1.Find out what kind of a priest/minister presided over the ceremony.
2.If it was purely civil provide documents to the polish catholic priest and you're good.
3. If you dont have documents pertaining the wedding it sucks to be you.
4. If it was a methodist wedding you have to obtain marriage annulment from the catholic court which in itself is difficult otherwise no amount of money will buy you a wedding, sorry but bribery wont work if you're married in the eyes of CC.
To me, also American, coppermouse's confusion about who married him (beyond the fact that whoever did had to fill out the appropriate government paperwork) seems pretty normal.
To be honest you guys are a nation of idiots but its still suprising sometimes.
Here's the news to you, Catholic faith has its own laws, decrees and customs, its not that we can't fathom your retarded way of life, its just that if you want to do the things Catholic way it means certain things will have to be done according to our customs and we're allergic to people with multiple wives unless they're muslims or some other kind of a hobo.