assumption that rational basis scrutiny is the appropriate standard of review in this case. Cf. Gruenwald v. Gardner, 390 F.2d 591 (2nd Cir. 1968).
In several cases from its past Term, however, the Court has suggested that rational basis scrutiny is not so deferential a standard of review as had been previously and generally supposed. First, the Court has apparently narrowed the linguistic gap between the two standards; it has avoided the terminology of two-tiered review in some cases, by posing instead certain fundamental inquiries applicable to “all” equal protection claims.8 Thus, in Weber v. Aetna Casualty & Surety Co., 406 U.S. 164, 92 S.Ct. 1400, 31 L.Ed.2d 768 (1972), invalidating a Louisiana workmen’s compensation law that discriminated against dependent unacknowledged, illegitimate children, the Court stated, 406 U.S. at 173, 92 S.Ct. at 1405, that the “essential inquiry” in all equal protection cases is
inevitably a dual one: What legitimate state interests does the classification promote? What fundamental personal rights might the classification endanger ?9
And in Police Department v. Mosley, 408 U.S. 92, 92 S.Ct. 2286, 33 L.Ed.2d 212 (1972), which held unconstitutional a Chicago ordinance that differentiated between types of peaceful picketing on the basis of subject matter, the Court stated, 408 U.S. at 95, 92 S.Ct. at 2290:
As in all equal protection cases, however, the crucial question is whether-there is an appropriate governmental interest suitably furthered by the differential treatment. See Reed v. Reed, 404 U.S. 71, 75-77 [92 S.Ct. 251, 253-254, 30 L.Ed.2d 225] (1971); Weber v. Aetna Casualty Co., 406 U.S. 164 [92 S.Ct. 1400, 31 L.Ed.2d 768] (1972) ; Dunn v. Blumstein, 405 U.S. 330, 335 [92 S.Ct. 995, 31 L.Ed.2d 274] (1972).10
Moreover, the Court seems far less willing to speculate as to what unexpressed legitimate state purposes may be rationally furthered by a challenged statutory classification. Compare McGowan v. Maryland, supra, 366 U.S. at 425-426, 81 S.Ct. 1101, with Gunther, supra note 3, at 33 (discussing James v. Strange, 407 U.S. 128, 92 S.Ct. 2027, 32 L.Ed.2d 600 (1972)).
Finally, and perhaps most significantly, the Court’s definition of what constitutes the necessary rational relationship between a classification and a legitimate governmental interest seems to have become slightly, but perceptibly, more rigorous. While under McGowan v. Maryland, supra, a classification is to be sustained unless it is “wholly irrelevant” to some permissible purpose, cases from the past Term spoke differently. In Reed v. Reed, 404 U.S. 71, 92 S.Ct. 251, 30 L.Ed.2d 225 (1971), for example, which struck down a section of the Idaho probate code giving mandatory preference to men over women when competing for the right to administer an estate, Chief Justice Burger stated for a unanimous Court, 404 U.S. at 76, 92 S. Ct. at 254:
A classification “must be reasonable, not arbitrary, and must rest upon some ground of difference having a fair and substantial relation to the object of the legislation. . .. ” Royster Guano Co. v. Virginia, 253 U.S. 412, 415, [40 S.Ct. 560, 561, 64 L.Ed. 989] (1920). The question presented by this case, then, is whether a difference in the sex of competing applicants for letters of administration bears a rational relationship to a state objective that is sought to be advanced .... [Emphasis added.]
8
See Gunther, supra note 3, at 17. .
9
Justice Powell’s opinion for the Court was joined by six other Justices. Justice Blackmun concurred in the result and Justice Rehnquist dissented.
10
Justice Marshall’s opinion for the Court was joined by five other Justices. Justices Blackmun and Rehnquist concurred in the result, and Chief Justice Burger concurred in a separate opinion.