Naah, I'd say it has more to do with preventing crime in the United States by making Mexico no longer a sanctuary for criminals. Mexican authorities won't send us anyone who could face the death penalty or life in prison... such as the punk Dog brought back. Result? People who commit the most heinous of crimes in the United States can dodge justice. This decreases the cost of committing crimes, which serves to encourage their commission.
Someone should follow the money, if possible. That said, Dog should have found a Church in Hawaii and asked for "sanctuary", like Mexican Illegals can do here.
sw