opinion: Per Curiam.
  Petitioner was ordered by the Subversive Activities Control Board to register as a Communist-front organization under § 7 of the Subversive Activities Control Act of 1950, as amended, 64 Stat. 993, 50 U. S. C. § 786 (1958 ed.), and the Court of Appeals for the District of Columbia Circuit affirmed. 117 U. S. App. D. C. 404, 331 F. 2d 64. We granted certiorari, 377 U. S. 989. In this case, the order to register was based almost exclusively on events before 1950, and very largely on events before 1940. The hearings themselves were concluded in November 1954, more than 10 years ago. On so stale a record we do not think it is either necessary or appropriate that we decide the serious constitutional questions raised by the order. See American Committee for Protection of Foreign Born v. Subversive Activities Control Board, ante, p. 503. The judgment is vacated and the cause remanded for proceedings consistent with this opinion.
  It is so ordered.
  Mr. Justice White took no part in the decision of this case.
  [For dissenting opinion of Mr. Justice Black, see ante, p. 511.]
choices: case did not arise on cert or cert not granted federal court conflict federal court conflict and to resolve important or significant question putative conflict conflict between federal court and state court state court conflict federal court confusion or uncertainty state court confusion or uncertainty federal court and state court confusion or uncertainty to resolve important or significant question to resolve question presented no reason given other reason