http://www.richw.org/dualcit/
http://www.post-gazette.com/nation/2...dual0515p4.asp
http://www.foreignborn.com/visas_imm...ationality.htm
Everything I've searched around so far concerns American citizens who acquire citizenship in a foreign country and whether they can retain their American citizenship. I could be wrong, but I don't the the U.S. government can make you renounce your Finnish citizenship because that's a decision that can only be made by the Finnish government. Just to be on the safe side though, you probably should contact a Finnish embassy.