Davis v. United States

Brief of Amici Curiae Electronic Frontier Foundation, Brennan Center for Justice at NYU School of Law, Center for Democracy & Technology, The Constitution Project and National Association of Criminal Defense Lawyers in Support of Petitioner.

Brief filed: 08/31/2015


Davis v. United States

United States Supreme Court; Case No. 15-146

Prior Decision

Decision below 785 F.3d 498 (11th Cir. (en banc) May 5, 2015), panel decision 754 F.3d 1205 (11th Cir. June 11, 2014), case below No. 10-20896-CR (S.D. Fla. 2012).


The number of cell phones and cell sites has dramatically increased in the last twenty years. Cell site location information (CSLI) paints a revealing portrait of a person’s movements. The number of law enforcement requests for location information – requests predominantly made without a warrant – is increasing. Certiorari is necessary to resolve the judicial split on whether a warrant is required to obtain CSLI, particularly as Americans expect these records to remain private.

Featured Products


Hanni M. Fakhoury, Jennifer Lynch, and Andrew Crocker, Electronic Frontier Foundation, San Francisco, CA; Michael Price and Rachel Levinson-Waldman, Brennan Center for Justice, New York, NY; Jeffrey T. Green, NACDL, Washington, DC.