The main purpose of this legislation is to enhance the understanding of how homegrown violent extremists and domestic terrorists acquire firearms and related accessories. By requiring the Financial Crimes Enforcement Network (FinCEN) to issue an advisory on this topic, the law aims to improve efforts to prevent gun violence linked to domestic terrorism. Key provisions of the law include a mandate for FinCEN to gather information from financial institutions about suspicious activities related to the procurement of firearms by individuals engaged in domestic terrorism.