I don't get why Bush would be against Canada decriminalizing weed, since the US does it.
Since 1973, 12 state legislatures -- Alaska, California, Colorado, Maine, Minnesota, Mississippi, Nebraska, Nevada, New York, North Carolina, Ohio and Oregon -- have enacted versions of marijuana decriminalization. In each of these states, marijuana users no longer face jail time (nor in most cases, arrest or criminal records) for the possession or use of small amounts of marijuana
http://www.norml.org/index.cfm?Group_ID=3383