The main purpose of this legislative text is to update the Immigration and Nationality Act to explicitly categorize certain individuals and groups as engaged in terrorist activity. This includes officials, representatives, and members of specific organizations such as Hamas, Palestine Islamic Jihad, Hezbollah, Al-Qaeda, and ISIS, as well as anyone who supports or promotes the terrorist actions of these groups. Key provisions of this legislation include the amendment of existing immigration law to broaden the definition of who is considered to be involved in terrorist activities.