Triston Harris Steinman v. United States

Did the Ninth Circuit’s reversal of the district court’s suppression ruling violate the party presentation principle, because the court reached a dispositive issue the government waived on appeal and applied a legal theory the government disclaimed in the district court?

Whether the Fourth Amendment allows the police to prolong a traffic stop by asking investigatory questions for a de minimis period, notwithstanding Rodriguez v. United States, 575 U.S. 348 (2015)?