One order identifies categories of children whose parents fall inside the historical exceptions the Court itself acknowledged. Trump empowered the secretaries of State and Homeland Security to deny visas, revoke existing ones, bar entry, and target the businesses who run birth tourism schemes. Studies have long shown that households headed by illegal immigrants generate large net costs once U.S.-born children are counted. More than three million illegal immigrants have been removed, including thousands with violent convictions. Taxpayer-funded benefits have been cut for more than 1.4 million illegal aliens, and illegal immigrants have been barred from more than a dozen health care programs.