The Canadian Food Inspection Agency (CFIA) and the United States Department of Agriculture’s Animal and Plant Health Inspection Service (USDA-APHIS) are moving forward to remove the current exemption for wood packaging being shipped between the two countries, as outlined in the International Standard for Phytosanitary Measures (ISPM) No. 15. This action is necessary to prevent the introduction of new forest pests, as well as slow the spread of forest pests already established in North America.
http://www.inspection.gc.ca/english/corpaffr/newcom/2011/20110214e.shtml