The American Civil Liberties Union has launched a suit seeking information about the country’s airline used for deportation flights — information it says will be key for pricing together a

The lawsuit alleges that U.S. Immigration and Customs Enforcement has failed to respond to requests for basic information about matters, including flights.

Civil liberties advocates worried about President-elect Trump's plan for mass deportations are suing the federal government to get information on how authorities could rapidly remove people from the U.