This lesson, part one of three lessons on searches and seizures with a warrant, addresses issuance of warrants. This involves basic principles about search and arrest warrants, who can issue them, the "preference" for warrants, and concepts of probable cause, particularity and nexus. The second lesson concerning warrants, "Searches and Seizures with a Warrant: Issuance of the Warrant 2" includes a detailed example of an application for a search warrant and the search warrant issued based on this application. These provide opportunities to identify potential shortcomings in both documents. The third lesson, "Searches and Seizures with a Warrant: Execution of the Warrant," covers what happens once the police obtain a warrant. No prior reading is recommended before completing this lesson.