What is the purpose of a warrant and how does it impact legal proceedings?

A warrant is a legal document issued by a judge that authorizes law enforcement to take a specific action, such as searching a property or making an arrest. Warrants ensure that law enforcement actions are based on probable cause and protect individuals from unreasonable searches and seizures. In legal proceedings, the presence or absence of a warrant can impact the admissibility of evidence and the validity of arrests, influencing the outcome of a case.