concurring in the result.
The arrest in this case was made upon probable cause in a public place in broad daylight. The Court holds that this arrest did not violate the Fourth Amendment, and I agree. The Court does not decide, nor could it decide in this case, whether or under what circumstances an officer must obtain a warrant before he may lawfully enter a private place to effect an arrest. See Gerstein v. Pugh, 420 U. S. 103, 113 n. 13; Coolidge v. New Hampshire, 403 U. S. 443, 474-481; Davis v. Mississippi, 394 U. S. 721, 728; Jones v. United States, 357 U. S. 493, 499-500.