Probable cause is the legal standard requiring law enforcement to have reasonable grounds for believing someone committed a crime before making an arrest. Without probable cause, the arrest is unlawful and evidence obtained becomes inadmissible. If police lack probable cause, your entire case may be dismissed. Officers often make arrests without sufficient probable cause, relying on minor infractions or pretextual stops. Housley Law challenges probable cause determinations and fights to exclude illegally obtained evidence. Protecting your Fourth Amendment rights against unlawful searches is fundamental to effective criminal defense.