R v Malmo-Levine; R v Caine [2003] 3 S.C.R. 571, 2003 SCC 74, is a Supreme Court of Canada decision that Parliament had the authority to criminalize the possession and trafficking of marijuana, and that power did not infringe on the section 7 of the Canadian Charter of Rights and Freedoms.
The Court found the harm principle is not a fundamental aspect of natural justice in Canada relevant to section 7 of the Charter.