United States v. Boyd

(after stating ■ the facts,as above). The home of the defendant could not be entered without a search warrant, unless, in the officers’ presence, the defendant was engaged in committing a crime therein. The act of the commission of the crime in the presence of the officers warranted the searching with relation to the particular offense. Such act, however, only supplied the function of the search warrant. The officers did not have carte blanche to search the house to see whether any crime was being committed.

Upon application for search warrant, to show probable cause to search for evidence of…