Unfortunately, there is no permit system to keep large constrictors in Illinois. But, the DNR states that as long as the burm is under 15' you are okay....so, that is still a pretty good sized snake and if you keep a male, you have a good chance of not having to worry about anything. I am able to keep very large burms due to my affiliation with a government supported wildlife center that I direct. Others I know, who use burms for education AND assist in many rescues, are not harrassed by local animal control/authorities because they perform a valuable service. In fact, even wildlife conservation officers will depend on these folks to assist in various confiscations. The bottom line is that you need to use common sense....be responsible, keep the burm indoors, keep in locked cage in a locked room, etc. We are working hard at re-writing the state law so that it protects individual rights while trying to be much more clear (which the current law isn't). There's no easy answer.