Mr. Justice JACKSON, concurring.

I agree with the result and with the opinion of the Court. But it rejects the search which two courts below have sustained without saying wherein it was wrong. It may be helpful to lower courts and to the police themselves to state what appears to some of us as the reason this search is bad.

McDonald v. United States (335 U.S. 451)/Concurrence Jackson

The police for several weeks had this defendant, McDonald, under surveillance. The United States Commissioner was approached about a search warrant but, for reasons which do not appear, declined to issue it. The only additional information which led the officers to take the law into their own hands and make this search without a warrant was that they heard an adding machine or a typewriter-the witness was not sure which-operating on the premises. Certainly the sound of an adding machine or typewriter, standing alone, is no indication of crime and it could become significant only when weighed in connection with other evidence. A magistrate might either have issued or refused a warrant if request had been made.

McDonald v. United States (335 U.S. 451)/Concurrence Jackson

However, the officer in charge of the investigation took the matter into his own hands. He neither had nor sought a search warrant or warrant of arrest; he did not then have knowledge of a crime sufficient, even in his own opinion, to justify arrest, and he did not even know that the suspect, McDonald, was in the rooming house at the time. Nevertheless, he forced open the window of the landlady's bedroom and climbed in. He apparently was in plain clothes but showed his badge to the frightened woman, brushed her aside and then unlocked doors and admitted two other officers. They then went to the hall outside the room rented and occupied by defendant. The officer in charge climbed on a chair and looked through a transom. Seeing the defendant McDonald engaged in activity which he considered to be part of the lottery procedure, he arrested him and searched the quarters. The Government argued, and the court below held, that since the forced entry into the building was through the landlady's window, in a room in which the defendant as a tenant has no rights, no objection to this mode of entry or to the search that followed was available to him.

McDonald v. United States (335 U.S. 451)/Concurrence Jackson

Doubtless a tenant's quarters in a rooming or apartment house are legally as well as practically exposed to lawful approach by a good many persons without his consent or control. Had the police been admitted as guests of another tenant or had the approaches been thrown open by an obliging landlady or doorman, they would have been legally in the hallways. Like any other stranger, they could then spy or eavesdrop on others without being trespassers. If they peeped through the keyhole or climbed on a chair or on one another's shoulders to look through the transom, I should see no grounds on which the defendant could complain. If in this manner they, or any private citizen, saw a crime in the course of commission, and arrest would be permissible.

But it seems to me that each tenant of a building, while he has no right to exclude from the common hallways those who enter lawfully, does have a personal and constitutionally protected interest in the integrity and security of the entire building against unlawful breaking and entry. Here the police gained access to their peeking post by means that were not merely unauthorized but by means that were forbidden by law and denounced as criminal. In prying up the porch window and climbing into the landlady's bedroom, they were guilty of breaking and entering-a felony in law and a crime far more serious than the one they were engaged in suppressing. Having forced an entry without either a search warrant or an arrest warrant to justify it, the felonious character of their entry, it seems to me, followed every step of their journey inside the house and tainted its fruits with illegality. Cf. Weeks v. United States, 232 U.S. 383, 34 S.Ct. 341, 58 L.Ed. 652, L.R.A. 1915B, 834, Ann.Cas.1915C, 1177; Taylor v. United States, 286 U.S. 1, 52 S.Ct. 466, 76 L.Ed. 951; Johnson v. United States, 333 U.S. 10, 68 S.Ct. 367.