The incoming Trump administration is preparing to implement significant immigration policy changes, including mass deportations and the reinstatement of the 'Remain in Mexico' policy. These actions aim to carry out the largest deportation operation in U.S. history and potentially terminate birthright citizenship for those in the country illegally. However, these plans are expected to encounter legal, operational, and political challenges. For instance, reinstating the 'Remain in Mexico' policy would require the consent of the Mexican government, which currently does not accept deportations. Additionally, there are approximately 4 million children living with at least one undocumented parent in the U.S., complicating mass deportation efforts. Furthermore, ICE lacks the resources to deport millions of individuals, and a significant political battle is anticipated between the administration and sanctuary cities that limit cooperation with federal immigration policies.