The Court has tolerated departures from the warrant requirement only when an exigency makes a warrantless search imperative to the safety of the police and of the community. ('We cannot be true to that constitutional requirement and excuse the absence of a search warrant without a showing by those who seek exemption from the constitutional mandate that the exigencies of the situation made that course imperative'); Warden v. Hayden, 387 U. S. 294 (1967) (hot pursuit); Chimel v. California, 395 U. S. 752 (1969) (interest in officers' safety justifies search incident to an arrest); Michigan v. Tyler, 436 U. S. 499, 436 U. S. 509 (1978) ('compelling need for official action and no time to secure a warrant' justifies warrantless entry of burning building). The Court has often heard, and steadfastly rejected, the invitation to carve out further exceptions to the warrant requirement for searches of the home because of the burdens on police investigation and prosecution of crime. Our rejection of such claims is not due to a lack of appreciation of the difficulty and importance of effective law enforcement, but rather to our firm commitment to 'the view of those who wrote the Bill ...