Civil liberties groups have asked a federal appeals court in New York to again strike down as unconstitutional a law that lets the government collect Americans' phone records.

The American Civil Liberties Union and the New York Civil Liberties Union made the request Tuesday to the 2nd U.S. Circuit Court of Appeals.

The Manhattan-based court in May struck down the law used to authorize the National Security Agency's collection of U.S. landline calling records.

Records collection resumed after the Foreign Intelligence Surveillance Court allowed it under new legislation Congress passed June 2.

The ACLU says Congress hasn't expanded the government's statutory authority. It urges the court to declare again the data collection is unconstitutional.

The government hasn't responded to a request for comment.