Today, more than 500,000 Canadians are encumbered with a criminal record for doing something that is now legal: possessing a small amount (30 grams or fewer) of cannabis. A criminal conviction has real and lasting consequences. It can restrict the bearer's access to employment, housing, travel and the opportunities that accompany them. This impact is grossly disproportionate to the actual harm caused by the simple possession of marijuana. Pardons do not go far enough. If the Liberals are serious about eliminating past convictions as a source of future prejudice, they must expunge convictions for simple possession.