In the Supreme Court of the United States, Nicholas Brady Heien, petitioner, v. North Carolina, respondent : on writ of certiorari to the Supreme Court of North Carolina : brief amicus curiae of Gun Owners Foundation, Gun Owners of America, Inc., U.S. Justice Foundation [and 10 others] in support of respondent / William J. Olson [and 6 others].

The question presented is whether a search or seizure is reasonable under the Fourth Amendment when a traffic stop is based on a police officer's reasonable mistake of fact or law.