http://news.yahoo.com/s/ap/20060504/ap_on_re_la_am_ca/mexico_decriminalizing_drugs;_ylt=ApbeZPH48eKuWNaJjk54YUNw24cA;_ylu=X3oDMTA5aHJvMDdwBHNlYwN5bmNhdA--

in other words possession would only be allowed for registered drug addicts.