As Illinois moves to become the latest state to legalize the recreational use of marijuana, many individuals who have criminal records for possession are about to see those records expunged. Under the new law, possession of up to 30 grams of marijuana at a time is authorized by law. Possessing greater quantities, however, is still considered criminal under Illinois Cannabis Regulation and Tax Act.
Law enforcement will use an algorithm to go through all the criminal records in Chicago and expunge any record of possession of marijuana that was at or below 30 grams. Those who have been caught with 500 grams or less can also have their records expunged, but they are required to petition the court to do so. 500 grams is over a pound, so this would be considered trafficking territory.
If you have a conviction for under 30 grams, then you do not have to do anything at all. The court will take care of it automatically and issue you a notice that your record has been expunged. Anything over 30 grams will require you to petition the court for an expungement.