Officer Fox argues he is entitled to qualified immunity on Plaintiffs' Fourth Amendment claim in which Plaintiffs allege he used excessive force against Harmon. Attorney General Sean D. Reyes joined an amicus brief to the United States Supreme Court in Chiaverini v Napoleon over a Fourth Amendment question.The public demands that the integrity of police officers be above reproach. The Fourth Amendment prohibits a police officer from using "unreasonable" force. Hall first claims that the officers employed excessive force during his arrest in violation of the Fourth Amendment. We provide the first scholarly analysis of how Fourth Amendment rules concerning use of force apply to medical practitioners who partner with law enforcement. Concluded that a Bivens claim arose in a new context where a prisoner alleged an excessive-force violation under the Eighth Amendment, rather than the Fourth. The Fourth Amendment to the United States Constitution prohibits the use of excessive force in the course of an arrest, investigatory stop, or other seizure. Excessive force claims can be maintained under either the Fourth, Fifth,. Eighth, or the Fourteenth Amendments, but each.