The Trump administration is reportedly considering a policy that would stop or limit the processing of international flights arriving in so called “sanctuary cities.” Sanctuary cities are places where local governments limit cooperation with federal immigration enforcement in certain situations. If implemented, the policy could affect how international travelers enter the United States through airports in those cities. Supporters may see it as a way to pressure local governments on immigration policy, while critics argue it could disrupt travel, local economies, airports, tourism, and international business connections.