Recent court rulings have paved the way for the Trump administration to enforce new immigration registration requirements affecting everyone living in the U.S. illegally, as well as specific categories of foreign nationals such as H-1B visa holders and Green Card holders. Under these new rules, illegal immigrants must register with the federal government and carry proof of their legal status at all times, with a stern warning from the Department of Homeland Security (DHS) about the consequences of non-compliance including potential deportation. Canadian travelers and other foreign nationals are also facing new registration requirements, which have raised concerns among immigrant advocacy groups. As these rules take effect, many immigrants are seeking guidance on how to navigate the implications of mandatory registration and compliance.