Petition for certiorari before judgment to C. A. D. C. Cir. Certiorari granted and case consolidated with No. 73-1766 [ United States v. Nixon, President of the United States, certiorari granted, ante, p. 927]. Parties shall exchange and file briefs by 1 p. m. on June 21, 1974, and any responsive briefs shall be filed by July 1, 1974. Oral argument set for July 8, 1974, at 10 a.m.