I asked this question eariler and told it needed to be rephrased...this is how my teacher asked it:

Question

Find the top ten violations that most United States industries are guilty of conducting. Pick a couple of other foreign countries and try to determine what their top violations might be.

Ok, your teacher asked a vague question

The other word I was going to suggest to change is "guilty". Few cited volations in labour law, safety, pollution, and other violations go to trial. Very few. So if you were asking for "guilty", there would be hardly none. Most, the great majority, are settled adminstratively out of court, with no finding or admission of guilt.

Try these:
http://www.plasticsmag.com/safetysolutions.asp?fIssue=Mar/Apr-00&aid=2578
www.michigan.gov/documents/cis_wsh_cetsp10_107247_7.doc
www.rrcc.edu/rmec/OSHAoutreach/mfcgi06.ppt
http://www.ctv.ca/servlet/ArticleNews/story/CTVNews/20070323/whistleblower_airsafety_070329/20070329/

So you see, it varies by industry. Again, the most common infraction is tax violation...these are not cited nor recorded, because they are "settled" out of court.
Good luck.