No that's not fair it has been escalating over many years...the Bush years had nothing to do with it.....
Wrong.
Bush's border policies for securing our borders were all but non-existent, and he personally and publicly pandered to the Mexicans, while labeling citizens that had a belly full, as "vigilantes".
Due to Bush's border failures and aiding and abetting open borders, this created not only a national security time bomb, but an environment for the drug cartels to have a free for all, enabling them to smuggle in thousands of tons of dope every year. During war time no less.
This was clearly a huge factor regarding Mexican drug violence, in Mexico.