Guaranteeing the States Protection Against Invasion

On January 20, 2025, President Donald J. Trump issued a proclamation declaring the situation at the U.S. southern border as an "invasion," invoking constitutional and statutory powers to suspend the entry of certain aliens. Citing national security and public health concerns, the proclamation restricts entry for those unable to provide sufficient background information and authorizes repatriation measures. This action could face legal challenges regarding the interpretation of "invasion" and the President's authority under immigration law, potentially impacting immigration policy and state-federal relations.