Constitutional Law. Equal Protection of the Laws. The HEW Guidelines Are Minimum Standards for a Free Choice School Desegregation Program. United States v. Jefferson County Bd. of Educ., 372 F.2d 836 (5th Cir. 1966), aff'd en banc, 380 F.2d 385 (5th Cir. 1967), cert. Denied, 36 U. S. L. W. 3144 (U. S. Oct. 9, 1967)