Spillover violence describes violent crime occurring in the United States (U.S.) deriving from the drug trafficking enterprise in Mexico. Perpetrated by Mexican transnational criminal organizations (TCOs), the occurrence of spillover violence has increased since the Mexican Government declared war against the TCOs in 2006. As secondary effects, many of the operational dynamics of TCOs have evolved, resulting in an increase in the degree of violence. Diversification of criminal enterprises and the struggle for leadership positions left vacant by the Mexican Government's campaign of targeting the top leadership positions of the TCOs are most notable. This looks at these secondary effects, along with domestic influences, to include the economy and education, in order to make a prediction as to the probability that spillover violence into the U.S. will increase.