Definition of immigration and naturalization service in English English dictionary
an agency in the Department of Justice that enforces laws and regulations for the admission of foreign-born persons to the United States
the INS a US government organization which deals with immigration, making sure that people from other countries obey official rules about who is allowed to live or work in the US. It also has the power to decide whether these people can become US citizens
{i} agency of the U.S. Department of Justice responsible for enforcing the laws pertaining to the admission of foreigners into the United States, INS