A petition to list the Burmese python as an injurious species. This is from 2006, but its the first I've heard of it. I assume since its so old that its already a dead issue, but I thought I would pass it along just in case.
http://www.fws.gov/contaminants/ANS/pdf_files/SFWMD_BurmesePython_LaceyActPetitionLetter_062306.pdf