The protection under the Fourth Amendment can be waived if one voluntarily consents to, or does not object to evidence collected during a warrantless search or seizure.
The circumstances under which the law deems a warrantless search, seizure, or arrest reasonable generally fall within the following seven categories: For a felony arrest in a public place. When directly related to a lawful arrest. During a traffic stop for reasonable suspicion.
Other well-established exceptions to the warrant requirement include consensual searches, certain brief investigatory stops, searches incident to a valid arrest, and seizures of items in plain view.
The Fourth Amendment doesn't apply to every governmental search. If the person searched did not have a reasonable expectation of privacy in the place the government searches (or the item the government seizes), there is no Fourth Amendment violation.
What constitutes an illegal search and seizure? Generally, a search or seizure is illegal under the Fourth Amendment if it occurs without consent, a warrant, or probable cause to believe a crime has been committed. However, there are several exceptions to the warrant requirement.
Other well-established exceptions to the warrant requirement include consensual searches, certain brief investigatory stops, searches incident to a valid arrest, and seizures of items in plain view.
For instance, a warrantless search may be lawful, if an officer has asked and is given consent to search; if the search is incident to a lawful arrest; if there is probable cause to search, and there is exigent circumstance calling for the warrantless search.
Exceptions to the Warrant Requirement Exigent circumstances. Plain view. Search incident to arrest. Consent.