ACLU sued U. S. soil security agencies Request for the release of telephone monitoring behavior

The American Civil Liberties Union (ACLU) has filed a lawsuit asking two homeland security agencies, Customs and Border Protection (CBP) and Immigration and Customs Enforcement (ICE), to release details of their use of powerful mobile phone monitoring tools. The devices are disguised as phone towers and then connected to nearby calls, information and device location data.
The 2 agencies have been rejecting ACLU requests for information since 2017 and told the civil rights group has found no records of responding to its request.
That response came despite the House Monitoring Committee finding in 2016 that ICE spent $10.6 million on 59 I MSI traps, while CBP spent $2.5 million on 33 such devices.
In the lawsuit, ACLU also cited two cases where ICE using IMSI traps to track and arrest immigrants. The cases were exposed only because journalists had discovered the authorization to use the devices.
In the initial request, ACLU requested ICE and CBP to provide records regarding IMSI trap policies, the use of surveillance tools by each field office and the time spent using them on behalf of external agencies. ACLU then wants ICE to disclose the details of how often the data was used as evidence in immigration court proceedings and the search warrant related to the cellular cell simulator.
ACLU wants to know how ICE ensures that people's civil liberties are protected when using IMSI traps, in addition to requiring documents showing what regulations are made when using IMSI traps.
For a long time in the past, a number of American civil rights agencies have challenged ICE in court. With some results, the effect of protection is far less fast than ICE is collecting information.

ICE's ability to build such massive surveillance operations without requiring congressional authorization and oversight and extreme secrecy sets an amazing example of how federal agencies can evade scrutiny. If federal agencies collect and use information about ordinary people on the grounds of law enforcement, so many privacy laws in the United States, from federal laws to state laws, are all useless.