See also Protective sweep. Reasonable suspicion, rather than probable cause, is necessary to support a protective sweep while an arrest is in progress.
'If there is sufficient evidence of a citizen's participation in a felony to persuade a judicial officer that his arrest is justified, it is constitutionally reasonable to require him to open his doors to the officers of the law.' Payton v. New York, 445 U. S. 573, 445 U. S. 602-603 (1980). It goes without saying that the Fourth Amendment bars only unreasonable searches and seizures, Skinner v. Railway Labor Executives' Assn., 489 U. S. 602 (1989). Cases show that in determining reasonableness, courts have balanced the intrusion on the individual's Fourth Amendment interests against its promotion of legitimate governmental interests. United States v. Villamonte-Marquez, 462 U. S. 579, 462 U. S. 588 (1983); Delaware v. Prouse, 440 U. S. 648, 440 U. S. 654 (1979). Under this test, a search of the house or office is generally not reasonable without a warrant issued on probable cause. There are other contexts, however, where the public interest is such that neither a warrant nor probable cause is required. Skinner, supra, ...