The purpose of the Countering White Supremacist Extremism Act is to enhance national security by addressing the threats posed by foreign violent white supremacist extremist organizations. The act mandates that the Under Secretary for Intelligence and Analysis at the Department of Homeland Security create a comprehensive threat assessment to better understand and counter these threats. Key provisions of the act include the requirement for the Under Secretary to develop a terrorism threat assessment that will be shared with state, local, and tribal law enforcement agencies.