The goal of this research is to assist in predictive modeling for radicalization into violent extremist ideologies. This research also shapes the theory of radicalization and establishes perimeters of micro subject areas that are included in the theory. The research examined domestic terrorists convicted in U.S. court systems who espoused violent extremist ideologies. U.S. citizens by birth, resident aliens, and naturalized citizens were included in the research data to determine whether a particular group is more susceptible to radicalization than others. Additionally, what group is carrying out more domestic terrorism attacks? The case study analysis is of 200 individuals who fit this profile. The development of a predictive modeling pathway was the result of the research. Additionally, examination of current policy with counter-radicalization programs overseas resulted in recommendations for future research and best practices for implementation into a unified U.S. counter-radicalization strategy.